A device that sends out sound waves to detect objects is called sonar device.
What are sound waves?
Sound waves are vibrations of air molecules that propagate through a medium, such as air, water, or solid materials. Sound waves are created when a force, such as a vibrating object, causes particles in the medium to vibrate. The vibrations cause the particles to move in an alternating pattern, creating a wave. The frequency of the wave determines the pitch of the sound. The amplitude of the wave determines the loudness.
Sonar stands for Sound Navigation and Ranging. It is a device that sends out sound waves and measures their echo off objects in the environment to detect their position, size, shape, and other characteristics. Sonar is used for a variety of applications, such as navigation, tracking objects, and detecting underwater obstacles.
Therefore, sonar device is the correct answer.
To learn more about sound waves the link
https://brainly.com/question/21995826
#SPJ1
a building consists of two floors. the first floor is attached rigidly to the ground, and the second floor is of mass slugs and weighs 16 tons (32,000 lbs). the elastic frame of the building behaves as a spring that resists horizontal displacements of the second floor; it requires a horizontal force of 5 tons to displace the ssecoonod floor a distance of 1 ft. assume that in an earthquake the ground oscillates horizontally with amplitude and circular frequency , resulting in an external horizontal force on the second floor. (a) what is the natural frequency (in hertz) of oscillations of the second floor? (b) if the ground undergoes one oscillation every 2.25s with an amplitude of 3in, what is the amplitude of the resulting forced oscillations of the second floor? (c) what is the name of the architect who designed the building?
The natural frequency (in hertz) of oscillations of the second floor
(a) To find the natural frequency of oscillation of the second floor, we can use the formula:
ω_n = √(k/m)
where ω_n is the natural frequency, k is the spring constant, and m is the mass of the second floor.
The spring constant k can be found by using the given information that a horizontal force of 5 tons (10,000 lbs) is required to displace the second floor by 1 ft. This means that the spring constant is:
k = F/x = (10,000 lbs) / (1 ft) = 10,000 lb/ft
Converting the mass of the second floor to slugs, we get:
m = 32,000 lbs / g = 32,000 / 32.2 = 994.4 slugs
Substituting the values of k and m, we get:
ω_n = √(k/m) = √(10,000 lb/ft / 994.4 slugs) ≈ 10.05 rad/s
Converting to Hertz, we get:
f_n = ω_n / 2π ≈ 1.6 Hz
Therefore, the natural frequency of oscillation on the second floor is approximately 1.6 Hz.
(b) The amplitude of the forced oscillations of the second floor can be found using the formula:
x = (F_0 / m) / √(ω² - ω_n²)
where x is the amplitude of the forced oscillations, F_0 is the amplitude of the external force, ω is the circular frequency of the ground oscillations, and ω_n is the natural frequency of the second floor.
Substituting the given values, we get:
x = (F_0 / m) / √(ω² - ω_n²)
= (10,000 lbs / 994.4 slugs) / √((2π/2.25 s)² - (10.05 rad/s)²)
≈ 0.11 ft
Converting to inches, we get:
x ≈ 1.3 in
Therefore, the amplitude of the forced oscillations of the second floor is approximately 1.3 inches.
To Learn More About oscillations click
https://brainly.com/question/30111348
#SPJ4
consider a 20 mm x 20 mm x 1 mm silicon die that dissipates 50 w. the electrical circuitry is on the back side of the die and all the heat is transferred from the front side and is dissipated from there. if the thermal conductivity of silicon is 125 w/moc, what is the temperature difference across the die?
A temperature difference (T) is the result of subtracting two independent isolated temperature measurements or measuring the amount of temperature rise or decline.
The two layers are the same thickness, but the materials are not. A's thermal conductivity is double that of B's. The temperature difference between the two ends of the wall in thermal equilibrium is 36o C. Determine the beginning and end temperatures, as well as the sample mass and energy provided. Subtract the end and starting temperatures to get the temperature change (T). Multiply the temperature difference by the mass of the sample. Distribute the heat/energy supplied by the product.
To calculate the temperature difference, just subtract the smaller figure from the bigger one, in this example 19 degrees Celsius from 25 degrees Celsius. This results in a six-degree Celsius temperature differential.
Learn more about heat/energy from here;
https://brainly.com/question/25384702
#SPJ4
an object whose center of gravity is above its base of support will be unstable if a vertical line projected downward from the center of gravity falls outside of the base of support. true false
An object whose center of gravity is above its base of support will be unstable if a vertical line projected downward from the center of gravity falls outside of the base of support. This statement is true.
The center of gravity of an object is the point at which its weight can be considered to act. If the center of gravity is above the base of support, the object will tend to tip over or fall if the vertical line projected downward from the center of gravity falls outside of the base of support.
If the base of support is not wide enough to counteract this torque, the object will become unstable and tip over.
To know more about the center of gravity, here
brainly.com/question/21511900
#SPJ4
A 600 g bat is swung quickly and hits a 150 g baseball. Which is true? O The bat exerts a larger force on the ball than the ball exerts on the bat. O The bat exerts a force on the ball, but the ball does not exert a force on the bat. O The bat exerts the same amount force on the ball as the ball exerts on the bat. O The bat exerts less force on the ball than the ball exerts on the bat.
The correct option is C. The bat exerts the same amount of force on the ball as the ball exerts on the bat.
In physics, pressure is an influence that may exchange the motion of an item. A force can purpose an object with mass to alternate its velocity (e.g. moving from a nation of relaxation), i.e., to boost up. its miles are measured inside the SI unit of newton (N). force is represented with the aid of the symbol F (formerly P).
The unique form of Newton's 2d regulation states that the net pressure appearing upon an object is identical to the fee at which its momentum modifications with time. If the mass of the item is steady, this regulation implies that the acceleration of an item is immediately proportional to the internet force appearing on the object, is within the direction of the internet force, and is inversely proportional to the mass of the object.
To learn more about Force visit here:
brainly.com/question/13191643
#SPJ4
what effect would you expect air resistance have on the graph in part a? (would it curve up, curve down, be steeper, etc?)
If air resistance is present, it would cause the graph in part a to curve down, making it less steep. This is because air resistance would oppose the motion of the object and cause it to slow down over time, resulting in a slower rate of change in the displacement over time.
What is air resistance and how does it affect the motion of objects in the atmosphere?Air resistance, also known as drag, is a force that opposes the motion of an object as it moves through the atmosphere. It arises from the collision of air molecules with the object's surface, which generates friction and a pressure differential. Air resistance increases with the object's speed, surface area, and shape, and can have a significant effect on the object's motion, especially at high speeds. For example, air resistance can cause a projectile to lose speed and altitude over time, or make it difficult for a vehicle to achieve high speeds. Understanding and accounting for air resistance is important in many fields, such as aerodynamics, physics, and engineering.
To know more about Motion visit:
https://brainly.com/question/22810476
#SPJ4
a penny is dropped from rest from the top of a very tall building. assuming the height of the building is 449 m and ignoring air resistance, find the speed with which the penny strikes the ground.
If the height of the building is 449 m and ignoring air resistance then, 93.8m/s is the speed with which the penny strikes the ground.
What is air resistance?
A type of friction (a force that resists motion) that happens between air and another object is air resistance, commonly referred to as drag. When a thing travels through the air, it experiences force. The two constant natural forces that affect every item on Earth are air resistance and gravity.
For instance, air particles pressing on an aircraft as it soars through the air make it more difficult for the aircraft to move. A feather's ability to fall is significantly influenced by air resistance.
Steps for calculation:
[tex]v^2=u^2+2gS \\where u=0, 2g=9.8m/s^2 and S=449m[/tex]
[tex]We get,\\ v^2 =2*9.8*449m^2 /s^2\\ v=93.8m/s[/tex]
To learn more about air resistance visit;
https://brainly.com/question/8141158
#SPJ4
the sun continues to shine today because of two kinds of balance. what are they and how do they work?
The two kinds of balance that keep the Sun shining are thermal equilibrium and hydrostatic equilibrium.
Thermal Equilibrium: The Sun shines by nuclear fusion, a process in which hydrogen atoms combine to form helium and release energy in the form of light and heat.
Hydrostatic Equilibrium: The Sun is also in hydrostatic equilibrium, which is the balance between the inward gravitational force and the outward pressure force.
These two balances are delicately intertwined and any disturbance to them could result in a catastrophic event such as a supernova or a collapse.
To know more about the sun, here
brainly.com/question/1116384
#SPJ4
if the cross-sectional area of the venture tube is 2 times larger at point a than it is at point b .what the air speed at point b is? (25.6 m/s)
If the cross-sectional area of the venturi tube is 2 times larger at point a than it is at point b then according to the continuity equation, the airspeed at point B is 0 m/s.
we know that the cross-sectional area of the Venturi tube is 2 times larger at point A than it is at point B.
Therefore, we can infer that the airspeed at point B is higher than the airspeed at point A. To determine the airspeed at point B, we can use the continuity equation.
It states that the mass flow rate of a fluid through a tube is constant at all points along the tube. Mathematically, this can be expressed as:
A1V1 = A2V2
where A1 and V1 are the cross-sectional areas and airspeed, respectively, at point A, and A2 and V2 are the cross-sectional areas and airspeed, respectively, at point B.
We are given that the airspeed at point A is 0 m/s, and the cross-sectional area at point A is 2 times larger than at point B.
Let's denote the cross-sectional area at point B as A, so the cross-sectional area at point A is 2A. We are also given that the airspeed at point B is V2.
By using the continuity equation, we can write:
(2A)(0 m/s) = AV2
Simplifying this equation, we get:
V2 = 0 m/s / 2
V2 = 0 m/s
Therefore, according to the continuity equation, the airspeed at point B is 0 m/s.
To learn more about continuity equation:
https://brainly.com/question/19566865
#SPJ4
3. The timeline below shows the sequence of events leading to the
Constitutional Convention. (H)
March 1781 Sept. 1783 Aug. 1786 Sept.1786 May 1787
Which conclusion can be drawn from the timeline?
A. Americans realized their first national government was not strong enough.
B. Most Americans felt the national government under the Articles of
Confederation was too strong.
C. Shays’ Rebellion had no influence on the decision to strengthen the
national government.
D. The new government was unable to negotiate a peace with Britain.
The conclusion that can be drawn from the timeline is that Americans realized their first national government was not strong enough.
The timeline shows that from March 1781 to September 1783, the United States was fighting for its independence from Great Britain, and it was during this time that the Articles of Confederation were adopted as the first national government. However, by August 1786, there were clear signs that the Articles of Confederation were not strong enough to meet the needs of the new nation. This led to the calling of the Constitutional Convention in May 1787, where the Constitution of the United States was written to establish a stronger national government that could better serve the needs of the new nation.Therefore, option A is the correct conclusion that can be drawn from the timeline.
To know more about timeline visit:
https://brainly.com/question/29720829
#SPJ1
how do lithospheric mantle and asthenosphere differ from each other?
The lithosphere, which is the mechanical layer's outermost layer and which exhibits stiff, brittle behaviour, The asthenosphere is a solid portion of the upper mantle that is so heated that it can flow and act plastically. The asthenosphere supports the lithosphere.
Why is it called lithosphere?The crust and the brittle upper mantle make up the lithosphere, the Earth's outermost layer. The Greek terms "lithos," which means stone, and "sphaira," which means globe or ball, are the source of the English word "lithosphere."The crust and uppermost mantle are both parts of the lithosphere, which is the planet's hard, rigid outer layer. The weaker, hotter, and deeper portion of the upper mantle, known as the asthenosphere, lies beneath the lithosphere. A variation in how each lithosphere and asthenosphere responds to stress defines their boundary. The asthenosphere deforms viscously and accommodates strain by plastic deformation, whereas the lithosphere remains hard for very long geologic time periods during which it deforms elastically and through brittle failure.
Thus, it is believed that the lithosphere's thickness corresponds to the distance from the isotherm that marks the change from brittle to viscous behaviour.
To know more about lithosphere visit:
https://brainly.com/question/14631600
#SPJ1
Which scenario shows how to use collaborative learning to explore potential energy?
Answer:
Members of a team work together to create a plan, and then members choose different tasks to carry out the plan.
which explains how ocean currents affect global climates?(1 point) responses water absorbs little thermal energy and releases it over time and distance. water absorbs little thermal energy and releases it over time and distance. water absorbs little thermal energy and releases it all at once. water absorbs little thermal energy and releases it all at once. water absorbs a lot of thermal energy and releases it over time and distance. water absorbs a lot of thermal energy and releases it over time and distance. water absorbs a lot of thermal energy and releases it all at once.
The statement that explains how ocean-currents affect global climates is: "Water absorbs a lot of thermal energy and releases it over time and distance."
The ocean-currents can be say as the continuous movement of sea water bodies in the ocean. Ocean currents are like large rivers of water flowing through the oceans.
The movement of ocean-currents has a major impact on global climate because water is a good conductor and storage of heat.
When we check the factors which affects the ocean currents to happen we have to talk about Coriolis-Effect. Coriolis Effect refers to an internal force (Coriolis) that causes the deflection of an object in motion.
Wind, water density and topography are the other major factors which directly influence the ocean currents.
Strong winds can move the water surface causing the ocean currents. About water density, more dense water will sink and that sinking water pushes the water below it up. About topography, ridge in the ocean bottom moves the water upward, while valley in the ocean moves it downward.
When ocean currents flow, they absorb large amounts of thermal energy. This energy is then transported over time and distance, affecting the temperature and climate of the regions through which the currents flow.
Learn more about ocean-currents:
https://brainly.com/question/20823678
#SPJ4
A nearsighted person has a near point of 12 cm and a far point of 40 cm. What power corrective lens is needed for her to have clear distant vision? With this corrective lens in place, what is her new near point?
A nearsighted person has a near point of 12 cm and a far point of 40 cm With the corrective lens in place, the person's new near point will be 0.23 m or 23 cm.
1) Power of corrective lens for clear distant vision:
Near point = 12 cm
Far point = 40 cm
Lens Power = (1 ÷ 0.40) - (1 ÷ 0.12)
Lens Power = 2.5 - 8.33
Lens Power = -5.83 D
2) New near point with the corrective lens in place:
Lens Power = -5.83 Diopters
Far point = 40 cm
New near point = 1 ÷ (-5.83) + 0.40
New near point = -0.171 + 0.40
New near point = 0.23 m
So, with the corrective lens in place, the person's new near point will be 0.23 m or 23 cm.
To know more about the corrective lens:
https://brainly.com/question/32985197
#SPJ12
What's the difference between a physical change and chemical change? in a quick, short and easy response please!
consider a cold canned (typically cylindrical in shape) drink left on a table. would the heat transfer be steady or transient? would you model the heat transfer as one-, two-, or three-dimensional? also, which coordinate system would you use to analyze this heat transfer problem?
The heat transfer in this situation would be transient, as the temperature of the room, the can, and the drink inside the can are all changing over time.
The heat transfer can be modeled as a two-dimensional problem, since the can is cylindrical in shape and the temperature of the can and the drink inside the can will only depend on the vertical and horizontal components of heat transfer. The coordinate system used to analyze the heat transfer problem would be cylindrical, since it is the most appropriate for modeling a cylindrical object. In this system, the radial direction is along the circular circumference of the can, and the axial direction is along the length of the can. The temperature of the can and the drink inside the can can then be calculated using the two-dimensional equations of heat transfer, which consider both the radial and axial components of heat transfer.
To learn more about heat click here https://brainly.com/question/30603212
#SPJ4
a potter's wheel moves uniformly from rest to an angular speed of 0.19 rev/s in 34.0 s. (a) find its angular acceleration in radians per second per second.
The angular acceleration of the potter's wheel that moves uniformly is [tex]0.0352 radians/s^2[/tex]
Angular acceleration is a measure of how quickly an object's angular velocity changes with respect to time. In this case, the potter's wheel undergoes a uniform acceleration, which means that its angular acceleration remains constant over time.
We can use the following equation to find the angular acceleration of the potter's wheel:
angular acceleration = (final angular speed - initial angular speed) / time
Here, the initial angular speed is zero because the wheel starts from rest. The final angular speed is 0.19 rev/s. The time taken to reach this speed is 34.0 s. We can convert the final angular speed to radians per second using the conversion factor 1 rev/s = 2π radians/s:
final angular speed = 0.19 rev/s * 2π radians/rev = 1.196 radians/s
Put values:
angular acceleration = (1.196 radians/s - 0 radians/s) / 34.0 s = [tex]0.0352 radians/s^2[/tex]
Therefore, the angular acceleration of the potter's wheel is [tex]0.0352 radians/s^2[/tex]
Learn more about angular acceleration here:
https://brainly.com/question/29428475
#SPJ4
what is the value and the direction of an electric field at a distance of 2.5 m from a 1 nc charge?
The electric field strength is positive, which means that the direction of the electric field is radially outward from the charge.
What is an electric field?The electric field strength at a distance r from a point charge q is given by:
[tex]E = k*q/r^2[/tex]
where k is Coulomb's constant, which has a value of approximately[tex]9.0 x 10^9 N m^2/C^2.[/tex]
In this case, we have a point charge [tex]q = 1 nC = 1 x 10^-9 C[/tex] located at a distance r = 2.5 m.
Substituting these values into the equation above, we get:
[tex]E = (9.0 x 10^9 N m^2/C^2) * (1 x 10^-9 C) / (2.5 m)^2[/tex]
[tex]E = 1.44 x 10^-6 N/C[/tex]
The electric field strength is positive, which means that the direction of the electric field is radially outward from the charge.
Learn more about electric field, here:
https://brainly.com/question/8971780
#SPJ1
Select the gas with the highest average kinetic energy per mole at 298 K.
a. carbon dioxide
b. all have the same kinetic energy
c. hydrogen
d. water
e. oxygen
Hydrogen (H2) has the highest average kinetic energy per mole at 298 K. So, the correct option is (c) hydrogen.
What is average kinetic energy?The average energy of gas particles as a result of their mobility is measured by the gas's average kinetic energy. It is closely related to the gas's temperature, which is a gauge of the system's average particle kinetic energy. The following equation provides a gas's typical kinetic energy:
KEavg = kT (3/2)
where T is the absolute temperature of the gas in Kelvin, k is Boltzmann's constant, and KEavg is the average kinetic energy of a gas.
According to question:
Since a gas's average kinetic energy is directly correlated with its temperature, the gas with the lowest molar mass will have the highest average kinetic energy per mole at any given temperature.
Our calculations based on the molar masses of the given gases at standard conditions (298 K, 1 atm) show that hydrogen (H2) has the lowest molar mass at 2.016 g/mol, followed by carbon dioxide (CO2), water (H2O), and oxygen (O2), which have molar masses of 44.01 g/mol, 18.02 g/mol, and 32.00 g/mol, respectively.
In light of this, at 298 K, hydrogen (H2) has the highest average kinetic energy per mole. Hydrogen is the proper response, which is (c).
To know more about average kinetic energy visit:
https://brainly.com/question/28702344
#SPJ4
bulbs a, b, and c in the figure are identical, and all are glowing. (a) rank in order, from most to least, the brightnesses of the three bulbs. (b) suppose a wire is connected between points 1 and 2. what happens to each bulb?
Bulb C goes out, Bulb A shines brighter (due to higher current), and Bulb B goes out (because to insufficient current) ( due to no current )
What does the term "current" signify in relation to electricity?The term "electric current" is frequently used to describe how much electricity flows through a circuit and how it flows in an electronic circuit. Amperes are used to measure it (A). As more electricity passes across the circuit, the ampere value increases.
What is a contemporary example?Starting a car, turning on a light, using an electric stove, watching TV, shaving with an electric razor, playing video games, using a phone, and charging a mobile phone are examples of current electricity.
To know more about current visit:
https://brainly.com/question/23323183
#SPJ4
Which do scientists study to determine air temperature at the time it was formed? Select the two correct answers. -Fossilized pollen-air bubbles trapped in ice-tree rings-chemical isotopes in foraminifera shells
Scientists can ascertain the isotope ratio and, consequently, the temperature at the time that layer was formed by examining the water molecules in each layer of ice.
What scientists study to determine air temperature?With the aid of satellite, instrument, historical, and environmental records, scientists examine the Earth's climate and how it changes. Given that satellite and sensor lifespans have been relatively brief compared to Earth's life, using these data can be difficult.
Ice cores can help researchers reconstruct past greenhouse gas concentrations in the atmosphere, in addition to revealing past temperatures.
Therefore, The study of climatic evolution is known as climatology. This branch of science aids with people's comprehension of the atmospheric factors that influence weather patterns and temperature variations throughout time.
Learn more about air temperature here:
https://brainly.com/question/27754428
#SPJ1
a brick is moving at a speed of 3 m/s and a pebble is moving at a speed of 5 m/s. if both objects have the same kinetic energy, what is the ratio of the brick's mass to the pebble's mass?
By the help of Kinetic energy ,the ratio of the brick's mass to the pebble's mass is [tex]\frac{9}{25}M = m[/tex]
A moving item or particle might have power of a certain sort called kinetic energy. An object gains kinetic energy when work, which involves the transfer of energy, is done on it by exerting a net force. Kinetic energy is a characteristic of motion that depends on the mass and speed of an object or particle. Motion includes all combinations of vibration, axis rotation, translation, and movement (along a path from one location to another).
M should represent the brick mass.
Let m represent the pebble's mass.
.[tex]\frac{1}{2} M(v)^2[/tex] =KE
[tex]\frac{1}{2} M(3)^2[/tex]=KE
[tex]\frac{1}{2} m(5)^2[/tex]= KE
[tex]\frac{1}{2} M(3)^2= \frac{1}{2} m(5)^2[/tex]
9M = 25m
[tex]\frac{9}{25}M = m[/tex]
Learn more about Kinetic energy
brainly.com/question/26472013
#SPJ4
the focal length of the lens of a simple digital camera is 5.7 mm, and it is originally focused on a flower 1.5 m away. in what direction must the lens be moved to change the focus of the camera to a tree 100 m away?
Lens of digital camera must be moved approximately 99.4 meters farther away from the flower to focus on the tree.
To change the focus of the camera from a flower 1.5 m away to a tree 100 m away, we need to move the lens to adjust the distance between the lens and the image sensor. This adjustment changes the focal length of the lens and allows the camera to focus on objects at different distances.
The focal length of the lens, f, is related to the distance between the lens and the image sensor, d, by the thin lens equation:
[tex]1/f = 1/d_o + 1/d_i[/tex]
where [tex]d_o[/tex] :object distance (lens to object distance), and [tex]d_i[/tex] : image distance (lens to image sensor distance).
For the original focus on the flower, we have:
f = 5.7 mm,
[tex]d_o[/tex]= 1.5 m, [tex]d_i[/tex] = ?
Using the thin lens equation, we can solve for d_i:
[tex]1/5.7 mm = 1/1.5 m + 1/d_i[/tex]
[tex]d_i[/tex] = 5.9 mm
The image sensor is 5.9 mm away from the lens when the camera is focused on the flower.
For the new focus on the tree, we have:
f = 5.7 mm
[tex]d_o[/tex] = 100 m, [tex]d_i[/tex] = ?
Using the thin lens equation again, we can solve for d_i:
[tex]1/5.7 mm = 1/100 m + 1/d_i[/tex]
[tex]d_i[/tex]= 5.77 mm
To change the focus of the camera from the flower to the tree, we need to move the lens by a distance Δd such that the new image distance is 5.77 mm. We can use the thin lens formula to find the new object distance:
[tex]1/5.7 mm = 1/d_o + 1/5.77 mm[/tex]
[tex]d_o[/tex] = 100.9 m
Learn more about lens here:
https://brainly.com/question/13885819
#SPJ4
What is the velocity of a skater who is 10 kg, and has a Kinetic energy of 10000 Joules?
Answer:
44.7 meter per second
Explanation:
The formula to find velocity is
V = (2 · KE / m)^1/2
V = velocity
KE = Kinetic energy
m = mass
Let's calculate
(2 · 10000 / 10) ^1/2 = 44.7 meter per second
the tortoise and the hare are running a 1 km race. after running comfortably for 7 s, the hare is so far ahead that he decides to take a nap under a tree, 100 m away from the finish line. if the tortoise is moving constantly at a speed of 0.27 m/s, and the maximum speed of the hare is 15 m/s, how long can the hare afford to nap if he does not want to lose the race?(a) 6.67 s(b) 370 s(c) 3630 s(d) 3690 s
The correct option is D. 3690s They can hare afford to nap if he does not want to lose the race.
D= 1000m
[tex]V_T[/tex]= 0.27 m/s
[tex]T_t=\frac{1000}{0.27} = 3703.7sec[/tex]
[tex]T_h = \frac{100}{15}[/tex][tex]= 6.7sec[/tex]
[tex]T_t = 7+ t_n +t_h[/tex]
[tex]3703.7 = 7+t_n +6.7\\t_n = 3703.7- 13.7\\t_n = 3690sec[/tex]
The pace is measured as the ratio of distance to the time wherein the distance is turned into a blanket. the pace is a scalar quantity because it has the most effective course and no importance. For the size of the pace in vehicles, speedometers are used. pace also can be calculated with the assistance of a graph. the space-time graph allows know-how of the rate of an object.
In regular use and in kinematics, the rate of an object is the value of the change of its position over the years or the importance of the alternate of its function per unit of time; its miles as a result a scalar amount. the spot pace is the limit of the common pace because the period of the time c program language period approaches 0. pace isn't always similar to velocity.
To learn more about Speed visit here:
brainly.com/question/28224010
#SPJ4
if you double the length of a cylindrical wire and reduce its diameter by half, the resistance of the wire will be
The resistance of the wire will increase by a factor of 8.
When the length of a wire is doubled, its resistance also doubles because resistance is directly proportional to the length. On the other hand, when the diameter of the wire is halved, the cross-sectional area of the wire reduces by a factor of 4 (πr^2 -> π(r/2)^2). As a result, the resistance decreases by a factor of 1/4.
So, when both changes are made, the resistance of the wire increases by a factor of 8 (2 x 4). This is because the effect of doubling the length is greater than the effect of halving the diameter. Thus, the net effect is an increase in resistance. This relationship between resistance, length, and cross-sectional area is described by the formula for resistance, which is R = ρL/A, where R is the resistance, ρ is the resistivity of the material, L is the length of the wire, and A is its cross-sectional area.
Learn more about resistance here:
https://brainly.com/question/29427458
#SPJ4
at time t 0, the velocity is (4.00 m/s)i. what are the (a) magni- ilw tude and (b) angle of its velocity when it has been displaced by 12.0 m parallel to the x axis? a moderate wind accelerates a pebble over a horizontal xy plane with a constant acceleration .
(a) magnitude of the final velocity is 11.94 m/s, and the (b) angle of the final velocity with respect to the positive x-axis is 37.1°.
We can tackle this issue utilizing kinematic conditions. Since the speed increase is consistent, we can utilize the accompanying conditions:
v = u + at
s = ut + 1/2 [tex]at^2[/tex]
[tex]v^2 = u^2[/tex] + 2as
where u is the underlying speed, v is the last speed, t is the time, s is the dislodging, and an is the speed increase.
Given: u = 4.00 m/s I, a = 5.00[tex]m/s^2[/tex] I + 7.00 [tex]m/s^2[/tex] j, s = 12.0 m lined up with the x-pivot.
Utilizing the second kinematic condition, we can address for the time taken to venture to every part of the distance:
s = ut + 1/2 [tex]at^2[/tex]
12.0 = 4.00t + 1/2 (5.00)[tex]t^2[/tex]
5.00[tex]t^2[/tex] + 4.00t - 12.0 = 0
Settling for t utilizing the quadratic recipe, we get:
t = 1.09 s (taking the positive root)
Utilizing the first kinematic condition, we can tackle for the last speed in the x-course:
v_x = u_x + a_x t
v_x = 4.00 + 5.00(1.09)
v_x = 9.45 m/s
Utilizing the Pythagorean hypothesis, we can track down the greatness of the last speed:
|v| = sqrt([tex]v_x^2 + v_y^2[/tex])
|v| = sqrt(([tex]9.45)^2[/tex] + ([tex]7.00)^2[/tex])
|v| = 11.94 m/s
Utilizing the reverse digression capability, we can track down the point of the last speed regarding the positive x-hub:
θ = [tex]tan^(- 1)[/tex](v_y/v_x)
θ = [tex]tan^(- 1)[/tex](7.00/9.45)
θ = 37.1°
Thusly, the (a) magnitude of the last speed is 11.94 m/s, and the (b) angle of its velocity as for the positive x-pivot is 37.1°.
To learn more about magnitude and angle of velocity, refer:
https://brainly.com/question/24180566
#SPJ4
The complete question is:
A moderate wind accelerates a pebble over a horizontal xy plane with a constant acceleration
a=(5.00m/s 2) i^+(7.00m/s 2) j^ .
At time t=0, the velocity is (4.00m/s) i ^.What are the (a) magnitude and (b) angle of its velocity when it has been displaced by 12.0m parallel to the x axis?
a bungee cord with a spring constant of 800 stretches 6 meters at its greatest displacement. how much elastic potential energy does the bungee cord have? the bungee cord has j of elastic potential energy.
Potential energy is a form of stored energy that is dependent on the relationship between different system components.
The bungee cord has 14400 joules of elastic potential energy.
The elastic potential energy of a spring (or in this case, a bungee cord) is given by the formula:
Elastic potential energy = [tex]1/2 * k * x^2[/tex]
Where:
k = spring constant
x = displacement from the equilibrium position
In this case, we know that the spring constant (k) is 800 and the maximum displacement (x) is 6 meters. Plugging these values into the formula, we get:
Elastic potential energy = [tex]1/2 * 800 * 6^2[/tex]
Elastic potential energy = [tex]1/2 * 800 * 36[/tex]
Elastic potential energy = 14400 joules
for such more question on potential energy
brainly.com/question/1242059
#SPJ4
a super happy fun ball is dropped from a height of 6 feet and rebounds of the distance from which it fell. how many times will it bounce before it's rebound is less than 1 foot?
A super-happy fun ball is thrown from a height of six feet, and it returns to the point where it was dropped. It only bounces once before rebounding less than a distance of one foot.
To solve this problem, we can use a geometric series to represent the distance traveled by the ball after each bounce.
Let's denote the height of the ball after the nth bounce as [tex]h_n[/tex]. Then we have:
[tex]h_1 = 6[/tex] (the initial height of the ball)
[tex]h_2 = 6 + 6 = 12[/tex] (the height after the first bounce)
[tex]h_3 = 6 + 6 + 6 = 18[/tex] (the height after the second bounce)
[tex]h_4 = 6 + 6 + 6 + 6 = 24[/tex] (the height after the third bounce)
and so on.
The height after the [tex]n^t^h[/tex] bounce:-
[tex]h_n = 6 * 2^(^n^-^1^)[/tex]
Now, we want to find the number of bounces that the ball will make before its rebound height is less than 1 foot. In other words, we want to find the smallest value of n such that[tex]h_n/2 < 1.[/tex] This is equivalent to:
= [tex]6 * 2^(^n^-^1^) / 2 < 1[/tex]
= [tex]3 * 2^(^n^-^1^) < 1[/tex]
= [tex]2^(^n^-^1^) < 1/3[/tex]
= [tex]n-1 < log2(1/3)[/tex]
= [tex]n < log2(1/3) + 1[/tex]
= [tex]log2(1/3) = -1.585, so n < -1.585 + 1 = -0.585[/tex].
Since n must be a positive integer, the smallest value of n that satisfies the condition is n = 1.
Therefore, the ball will bounce once before its rebound height is less than 1 foot.
To know more about distance please refer: https://brainly.com/question/9722272
#SPJ4
what distinguishes the orbit of pluto from that of the eight major planets of the solar system?
Pluto's orbit is much more eccentric and inclined compared to the orbits of the eight major planets in the solar system. This means that Pluto's orbit is more elliptical and tilted relative to the plane of the solar system, while the orbits of the major planets are generally more circular and on the same plane.
First, Pluto's orbit is much more eccentric (elongated) than the orbits of the other planets. This means that its distance from the Sun varies more dramatically over the course of its orbit. While the other planets have nearly circular orbits, Pluto's orbit is more oval-shaped.
Second, Pluto's orbit is also more inclined (tilted) relative to the plane of the Solar System. The eight major planets all orbit in roughly the same plane, but Pluto's orbit is tilted at an angle of about 17 degrees. This means that it sometimes travels above and below the plane of the Solar System during its orbit.
Learn more about Pluto at https://brainly.com/question/13037755
#SPJ11
7. a charge of 4.2c is placed at each corner of a square 0.100m on a side. determine the magnitude of the force on each charge.
The magnitude of the force on each charge is approximately 3.16 × 10^-15 N.
What is magnitude of the force?
The magnitude of the force is a measure of the strength of the force between two charged objects. In this case, we have four charged objects arranged in a square, and we want to find the magnitude of the force acting on each of these objects. The magnitude of the force is given by Coulomb's law, which depends on the charges of the objects and the distance between them. In this problem, we assume that the charges are point charges and the square is a plane, and use Coulomb's law to calculate the magnitude of the force between two opposite charges. The magnitude of the force on each charge is then determined by adding up the forces due to the other three charges. The result is a numerical value that tells how strong the force is on each charge, but it does not tell us the direction of the force.
Assuming that the charges are point charges and the square is a plane, the magnitude of the force between two point charges can be calculated using Coulomb's law:
F = (k * q1 * q2) / r^2
where F is the force between the charges, k is Coulomb's constant
(9 × 10^9 N·m^2/C^2), q1 and q2 are the charges, and r is the distance between the charges.
In this case, each corner of the square has a charge of 4.2c, where c is the elementary charge (1.602 × 10^-19 C). So, the charges are:
q1 = q2 = q3 = q4 = 4.2c = 4.2 * 1.602 × 10^-19 C
= 6.7244 × 10^-19 C
The force on one of the charges is the vector sum of the forces due to the other three charges. Since the square is symmetric, the direction of the force will be along the diagonals of the square. The distance between two opposite corners of the square is:
r = √2 * 0.100 m
= 0.1414 m
Using Coulomb's law, the magnitude of the force between two charges is:
F = (k * q1 * q2) / r^2 = (9 × 10^9 N·m^2/C^2) * (6.7244 × 10^-19 C)^2 / (0.1414 m)^2
≈ 1.58 × 10^-15 N
Therefore, the magnitude of the force on each charge is:
F total = 2 * F = 2 * 1.58 × 10^-15 N
≈ 3.16 × 10^-15 N
Note that the direction of the force on each charge is along the diagonal of the square, so it has both x and y components. The x and y components of the force cancel out for two opposite charges, but they add up for adjacent charges.
To know more about magnitude, visit:
https://brainly.com/question/30337382
#SPJ4
