A. Any two objects in the universe exert gravitational force on each other. The gravitational force can affect objects even if they are far from each other, and it does not only affect objects within the solar system or those on the surface of a planet or moon.
What is the universal law of gravitation?According to the law of universal gravitation, any two objects in the universe exert a gravitational force on each other, proportional to their masses and inversely proportional to the square of the distance between them. The strength of the gravitational force decreases as the distance between the objects increases.
How can one calculate gravitational force?You can calculate gravitational force by:
F = G * (m1 * m2) / r^2, in the equation F stands for force of gravity, G is the gravitational constant, m1 and m2 are the masses of the two objects, and r shows the distance between them.
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A student does 65.0 J of work to move a stack of books 3.5 m up to a shelf at a
constant velocity. What amount of vertical force does she lift it with?
The vertical force applied by the student to lift the book is 18.57 N.
What amount of vertical force does she lift it with?
The vertical force applied by the student to lift the book is calculated by applying the following formula.
W = Fd
where;
F is the applied forced is the displacement of the objectW is the wok done by the studentF = W / d
The vertical force applied by the student to lift the book is calculated as;
F = ( 65 J ) / ( 3.5 m )
F = 18.57 N
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a clue to the process of planetary formation comes from meteorites, which are pieces of debris that have fallen from space to earth. most meteorites are made of materials that have remained unchanged since the time that the solar system was first forming, which make them excellent indicators of what conditions were like during that time.
Individual particles in the nebula stick together to form larger pieces which later collide with and stick to other pieces to gradually form larger objects, which eventually grow to the size of a planet.
A meteorite is a rock that falls to Earth from space. Some meteorites even contain tiny particles that formed around other stars that existed before our Sun.
All meteorites come from inside our solar system. Most of them are fragments of asteroids that broke apart long ago in the asteroid belt, located between Mars and Jupiter. Such fragments orbit the Sun for some time–often millions of years–before colliding with Earth.
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A car is traveling at a steady 71 km/h in a 50 km/h zone. A police motorcycle takes off at the instant the car passes it, accelerating at a steady 7.5 m/s2.
a. How much time elapses before the motorcycle is moving as fast as the car?
b. How far is the motorcycle from the car when it reaches this speed?
(a) The time elapses before the motorcycle is moving as fast as the car is 2.6296 second.
(b) The motorcycle is 25.93 meter far from the car when it reaches this speed.
What is acceleration?Acceleration is rate of change of velocity with time. Si unit of acceleration is meter/second² (m/s²).
Speed of the car = 71 km/h = 71 ×5/18 m/s = 19.722 m/s.
Acceleration of the police motorcycle = 7.5 m/s²
Hence, Time taken by the motorcycle to be as fast as the car = 19.722 ÷ 7.5 s
= 2.6296 second.
The distance between the motorcycle and the car
= (19.722×2.6296 - 1/2×7.5 × 2.6296²) meter
= 25.93 meter.
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Whait is harmonics of recuency?
A harmonic is a wave or signal whose frequency is an integral (whole number) multiple of the frequency of the same reference signal or wave.
Define harmonics of frecuency?
Harmonics is defined as the integer (whole number) multiple of the fundamental frequency. Open cylindrical columns, vibrating strings will vibrate at all the harmonics of the fundamental frequency.In music, harmonics are used on string instruments and wind instruments as a way of producing sound on the instrument, particularly to play higher notes and, with strings, obtain notes that have a unique sound quality or "tone colour".The first harmonic is also called the fundamental frequency. It is the lowest possible value of the frequency. In simple words, a wave that has only 2 nodes and an antinode is called the first harmonic.The harmonic frequencies are integer multiples [2, 3, 4, ...] of the fundamental frequency. For example, the 2nd harmonic on a 60 Hz system is 2*60 or 120 Hz. At 50Hz, the second harmonic is 2* 50 or 100Hz. 300Hz is the 5th harmonic in a 60 Hz system, or the 6th harmonic in a 50 Hz system.To learn more about frequency refers to:
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Find the ratio of the y velocity of the string to the slope of the string calculated in the previous part.
Express your answer as a suitable combination of some of the variables ω, k, and vp.
The ratio of the y velocity of the string to the slope of the string is given by the expression vy/m = ω/k.
Find the ratio of the y velocity of the string to the slope of the string calculated in the previous part?This ratio is determined by the angular frequency (ω) of the wave, the wave number (k) of the wave, and the phase velocity (vp) of the wave.The angular frequency (ω) is related to the frequency (f) of the wave by the equation ω = 2πf.The wave number (k) is related to the wave length (λ) of the wave by the equation k = 2π/λ.The phase velocity (vp) is related to the wave number (k) and the angular frequency (ω) by the equation vp = ω/k.Therefore, the ratio of the y velocity of the string to the slope of the string is given by the expression vy/m = ω/k = vp.The ratio of the y velocity of the string to the slope of the string is equal to the product of the angular frequency, ω, and the wave velocity, vp. This ratio is expressed as:velocity ratio = ω*vpThe angular frequency is related to the wave number, k, such that:ω = 2πkTherefore, the velocity ratio can be rewritten as:velocity ratio = 2πk*vpThis equation shows that the ratio of the y velocity of the string to the slope of the string is a combination of the angular frequency, wave number, and wave velocity. This ratio is an important factor in understanding the behavior of a wave in a string.To learn more about The ratio of the y velocity of the string refer to:
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In Vander Waal's equation (P+ a/v^2) (V - b) = RT, what are the dimensions of constants 'a' and 'b'?
Answer:
Explanation:
(P+ a/v^2) (V - b) are two factors in parentheses. These factors which represent physical quantities and are determined by subtraction. You can’t subtract unless both terms have the same dimensions.
[tex]a/v^{2}[/tex] has the same units as p
a=p[tex]v^{2}[/tex] =
[tex][ML^{-1}T^{-2}] [L^{6}] = [ML^{5}T^{-2}][/tex]
v has the same units as b
B = [tex][L^{3}][/tex]
A piston absorbs 42 J of heat from its surroundings while being compressed
from 0.0007 m³ to 0.0002 m³ at a constant pressure of 1.0 × 105 Pa. What
are the correct values for heat and work for the piston?
OA. Q=-42 J, W = +50 J
OB. Q = +42 J, W = +50 J
OC. Q = +42 J, W = -50 J
OD. Q = -42 J. W = -50 J
The correct values for heat and work for the piston are;
Q = +42 J, W = -50 J
Option C
What is the work done?
We must note that the work that has been done by the piston can be obtained by the formula that we know and that formula states that;
w = PdV
w = work that have been done
P = pressure
dV = change in the volume
As such we would have that the work done is;
w = 1.0 × 10^5 Pa (0.0002 - 0.0007)
w = -50 J
This is the work that has been done but the heat was absorbed hence it is positive.
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A truck with 28-In.-diameter wheels is traveling at 45 mph.
How many revolutions per minute do the wheels make?rpm
What is the angular speed of the wheels In radians/min?rad/min
Round answers to 2 decimal places
Answer:
To find the number of revolutions per minute (RPM) the wheels make, we first need to find the circumference of the wheel. We can use the equation:
Circumference = 2 * pi * radius
The diameter of the wheel is 28 inches, so we can find the radius by dividing the diameter by 2:
Radius = 28 inches / 2 = 14 inches
Now we can find the circumference of the wheel:
Circumference = 2 * pi * 14 inches = 87.96 inches
To find the number of revolutions per minute, we need to know how many inches the wheel travels in one minute, we can convert 45 mph to inches per minute by multiplying 45 mph by 1.46667 (1 mph = 1.46667 inches/s)
inches per minute = 45 * 1.46667 = 66.00015 inches
So we can find the number of revolutions per minute by dividing the distance traveled per minute by the circumference of the wheel:
RPM = inches per minute / circumference
RPM = 66.00015 inches / 87.96 inches = 0.75 rev/min
To find the angular speed of the wheels in radians per minute, we can use the equation:
Angular speed = 2 * pi * RPM
Angular speed = 2 * pi * 0.75 rev/min = 4.71 rad/min
So the angular speed of the wheels in radians per minute is 4.71 rad/min (rounded to 2 decimal places)
Matt's book is motionless on a table.
Which force diagram would represent Matt's book? You may neglect the effects of air resistance.
1. Diagram A
2. Diagram B
3. Diagram C
4. Diagram D
While operating around buildings, the remote pilot in command (PIC) should be aware of the creation of wind gusts that:
Change rapidly in direction and speed, creating turbulence
While operating around buildings, the remote pilot in command (PIC) should be aware of the creation of wind gusts that change rapidly in direction and speed, creating turbulence.
The ATC authorization that is also known as air traffic control authorisation is the mechanism by which an operator is accepted to be able to operate in a controlled airspace. Usually the authorized pilot are aware of the wind gusts that change rapidly in direction and speed, creating turbulence.
Any pilot who is operating within a airspace of high buildings that is a controlled airspace is required to have the ATC authorization weather if the aircraft that he is using is small in size or big.
Usually the air space surface that is present above 10000 feet of the surrounding of the nation is considered to be the class B Airspace where fast wind are are observed.
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Calculate the pressure exerted on the ground by a person weighing 70kg whose two feet cover an area of 400cm square.if the man stands on one foot,what is the new pressure he exerts on the ground?
which of the following melodic features is used in the treble clef in measures 45 and 46 ?
There are two forms of the melodic minor scale: ascending and descending.
What is melodic features?
A melodic line has several key characteristics, including contour, range, and scale. The contour of melody is the overall line that rises, falls, arches, undulates, or moves in any other characteristic way.Definitions of melodic. adjective. containing or constituting or characterized by pleasing melody. synonyms: melodious, musical ariose, songlike. having a melody (as distinguished from recitative).For example: Solo vocalists use melody when they sing the main theme of a song. Choral vocalists sing melodies as a group. Some choruses sing the same notes in unison, like in the traditions of ancient Greece.There are two types of melodic motion: conjunct motion, which proceeds by step from one scale degree to the next (i.e., by the interval of a 2nd) and disjunct motion, which proceeds by leap.To learn more about features refers to:
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students are measuring the relationship between current and voltage in a circuit. the lab instructions say to plot the voltage versus the current. what values go on the x and y axes of the graph
The x-axis of the graph should be labeled "Current (A)", with the current in amperes (A) being the independent variable.
What is graph?A graph is a mathematical structure used to model relationships between objects. It is a collection of points, called vertices, and lines connecting them, called edges. Graphs are used to represent networks of communication, data organization, computational devices, the flow of computation, and even abstract concepts. Graphs are useful in a variety of applications, including computer vision, artificial intelligence, graphics, and databases.
The y-axis of the graph should be labeled "Voltage (V)", with the voltage in volts (V) being the dependent variable. The graph should represent the relationship between voltage (y-axis) and current (x-axis).
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In the temperature experiment, you used a thermometer to measure the temperature inside a closed hand and in four beakers of water. Please match the question with the correct answer choice.
1. Temperature inside the beaker of room temperature water.
2. Temperature inside the closed hand.
3. Temperature inside the beaker of cold tap water.
4. Temperature inside the beaker of ice water.
5. Temperature inside the beaker of hot tap water.
In the temperature experiment, a thermometer was used to measure the temperature with a closed hand and four beakers of water. Then the correct answer is the temperature of a cup of water at room temperature, the temperature of a closed hand.
Averaged across all activities, the mean temperature of the closed side of the ring finger and palm was 17.7 °C (63.9 °F), significantly (p <0.01) a low temperature. °F). F). The water temperature in the cup is 25°C. Endothermic reactions absorb energy, so when the beaker is closed all the energy is absorbed by the reaction, and the temperature inside the beaker drops.
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A spaceship is traveling at a velocity of v⃗0=(28.9m/s)î v → 0 = ( 28.9 m / s ) i ^ when its rockets fire, giving it an acceleration of a⃗=(2.12m/s2)î+(4.95m/s2)ĵ a → = ( 2.12 m / s 2 ) i ^ + ( 4.95 m / s 2 ) j ^
The final speed of the plane after 6.29 s is 62.866 m/s.
So the magnitude of the initial velocity is, V(0) = (28.9 m/s)
And the acceleration component is,
a = (2.12 m/s2)i + (4.95m/s2)j
So the magnitude of the acceleration is
a = √2.122 + √4.952
a = √4.50 + √24.5
a = √29
a = 5.4 m/s2
And the time is, t = 6.29 seconds
By the first law of motion,
V(f) = V(i)+at
V(f) = 28.9 + 5.4(6.29)
V(f) = 62.866 m/s
Where v(f) is the final speed of the spacecraft after 6.29 seconds. So, the final speed of the plane after 6.29 s is 62.866 m/s.
Your question is incomplete but most probably your full question was:
A spaceship is traveling at a velocity of v⃗0=(28.9m/s)î v → 0 = ( 28.9 m/s)i when its rockets fire, giving it an acceleration of a⃗=(2.12m/s²)î+(4.95m/s2)ĵ a → = ( 2.12 m/s²)i + ( 4.95 m/s²)j. How fast, in meters per second, is the rocket moving 6.29s6.29s after the rockets fire?
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Part A. A block is sliding with constant acceleration down an incline. The block starts from rest at t = 0 and has speed 3.40 m/s after it has traveled a distance 8.90 m from its starting point.
What is the speed of the block when it is a distance of 17.8 m from its t = 0 starting point? Express your answer with the appropriate units.
The speed of the block when it is a distance of 17.8 m from its starting point is 14.1 m/s.
What is speed?Speed is a rate at which something is travelling or moving. It can be measured in a variety of ways, such as miles per hour (mph), kilometres per hour (kph), metres per second (m/s), or knots.
The acceleration of the block can be calculated using the equation a = (v-u)/t, where a is the acceleration, v is the final velocity, u is the initial velocity and t is the time. Since the initial velocity of the block is 0 m/s, we can write: a = v/t.
Using the given information, we know that when the block has traveled a distance of 8.90 m from its starting point, its speed is 3.40 m/s. Therefore, we can calculate the acceleration of the block as follows: a = 3.40 m/s / (8.90 m / 3.40 m/s) = 0.38 m/s2.
Now, we can use the equation v2 = u2 + 2ax to calculate the velocity of the block when it is a distance of 17.8 m from its starting point. Substituting the known values, we get: v2 = 0 + 2(0.38 m/s2)(17.8 m) = 14.1 m/s2
Therefore, the speed of the block when it is a distance of 17.8 m from its starting point is 14.1 m/s.
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Three metal cubes with edges 3 cm, 4 cm and 5 cm are melted to form a single cube. Find the area of the side formed in the large cub
The area of the side formed in the large is 36 cm².
What is cube?A cube is a three-dimensional solid object in geometry that is surrounded by six square faces, facets, or sides, three of which meet at each vertex. It looks like a hexagon when viewed from a corner, and its net is typically portrayed as a cross.
The total volume of the three cubes = 3³ cm³ + 4³ cm³ + 5³ cm³ = 216 cm³
So, the length of the edges of the new cube = ∛216 cm = 6 cm
Hence, the area of the side formed in the large cub = 6² cm² = 36 cm².
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Describe an experiment to determine the frequency, amplitude and period of a flywheel in motion.
To determine the frequency, amplitude, and period of a flywheel in motion, one can conduct the following experiment:
Obtain a flywheel that is capable of rotating and vibrating.Attach a tachometer or a high-speed camera to the flywheel to measure its speed of rotation.Use a strobe light to freeze the motion of the flywheel at regular intervals.Observe and measure the displacement of the flywheel from its center of rotation at each interval.Plot the displacement of the flywheel against time to obtain a waveform.Determine the frequency of the waveform by counting the number of complete cycles of vibration that occur in one second.Calculate the amplitude of the waveform by measuring the maximum displacement of the flywheel from its center of rotation.Determine the period of the waveform by measuring the time it takes for one complete cycle of vibration.Repeat the experiment multiple times to confirm the results and calculate an average.The resulting data can be used to calculate the frequency, amplitude, and period of the flywheel's motion and can provide insight into the mechanical properties of the system.What is the flywheel about?A flywheel in motion refers to a rotating wheel that is used to store energy. It helps to maintain the velocity of an engine and to reduce fluctuations in the energy supplied to it.
In an experiment to determine the frequency, amplitude and period of a flywheel in motion, researchers will measure various characteristics of the wheel as it rotates, such as the speed of rotation, the amount of energy being stored, and the amount of time it takes for the wheel to complete one full rotation.
Therefore, This information will allow them to calculate the frequency, amplitude, and period of the flywheel, providing valuable insights into its behavior and performance.
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You slide across a icy sidewalk. According to Newtons first law, why are you in motion?
A. Inertia caused you to accelerate.
B. There is no air resistance.
C. A force overcame your inertia.
D. You are subject to balanced forces.
When you slide across a icy sidewalk, you are in motion because you are subject to balanced forces according to Newton's first law.
What is Newton's first law?A body remains in a condition of rest or uniform motion in a straight line until and until an external force acts on it, according to Newton's first law of motion.
According to Newton's first law of motion, a body won't begin to move unless and until an outside force acts on it. When anything starts moving, it won't stop or vary its speed unless another force acts on it. Hence, you slide across a icy sidewalk.
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A thin, square, conducting plate 42.0 cm on a side lies in the xy plane. A total charge of 4.20 10-8 C is placed on the plate. You may assume the charge density is uniform. (a) Find the charge density on each face of the plate. C/m2 (b) Find the electric field just above the plate. magnitude N/C direction (c) Find the electric field just below the plate. magnitude N/C direction
(a) The charge density on each face of a thin, square, conducting plate 42.0 cm on a side lies in the xy plane. A total charge of 4.20 x 10⁻⁸ C is placed on the plate = 8.4 nC/m²
(b) The electric field just above the plate = 95 kN/C k
(c) The electric field just below the plate = -95 kN/C k
How to determine the charge density of the plate?We disregard "edge" effects and assume that the total charge is distributed uniformly across the plate, with one-half of the total charge on each side. The charge density on the plate's upper and lower surfaces is:
σ = [tex]\frac{1}{2}[/tex] (q / A)
Where:
σ = charge density
q = total charge
A = the area of the plate
Hence,
(a)
σ = [tex]\frac{1}{2}[/tex] (4.20 x 10⁻⁸ C) / (0.500m²)
= 8.4 x 10⁻⁸
= 8.4 nC/m²
The direction ⇒ positive
(b)
The electric field just above the plate:
Ё = (σ / ε₀) k
= (8.4 x 10⁻⁸ / 8.85 x 10⁻¹²)
= (95 kN/C) k
The direction ⇒ positive
(c)
The electric field just below the plate:
(-95 kN/C) k
The direction ⇒ negative
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Two pans of a balance are 39.3 cm apart.
The fulcrum of the balance has been shifted
1.46 cm away from the center by a dishonest
shopkeeper.
By what percentage is the true weight of the
goods being marked up by the shopkeeper?
Assume the balance has negligible mass.
Answer in units of %.
pls help I'm so lost
The true weight of the goods is being marked up 1,936.5% by the shopkeeper.
What is the error in percentage?To calculate the percentage of increase in weight, we need to calculate the actual increase in weight, then divide it by the true weight and multiply by 100.
The displacement of the fulcrum has caused a torque on the balance, and we can calculate this torque using the formula: torque = force x distance. The force causing the torque is the weight of the goods, and the distance is the displacement of the fulcrum from the center.
Torque = weight x displacement
= weight x (39.3 / 2 + 1.46)
= weight x (20.365)
The balance is in equilibrium, so the sum of torques on the two pans is zero. Therefore, the torque on the pan with the goods is equal in magnitude but opposite in direction to the torque on the other pan.
Torque_goods = -Torque_counterweights
= - (weight_counterweights x 20.365)
= - (weight_goods x 20.365)
Dividing both sides by weight_goods, we get:
20.365 = - weight_goods / weight_counterweights x 20.365
Solving for weight_goods, we find:
weight_goods = weight_counterweights x 20.365 / 20.365
Therefore, the actual weight of the goods is 20.365 times the true weight. The percentage increase in weight is:
percentage increase = (actual weight - true weight) / true weight x 100
= (20.365 - 1) / 1 x 100
= 1,936.5%
So, the true weight of the goods is being marked up by 1,936.5%.
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you have three charged conducting spheres. the magnitude of these charges are 2c, 3c and 4c. without knowing which charges are positive and which charges are negative, which of the following could represent the charge on a single sphere if the spheres are brought into contact with each other and then separated?a. -10 Cb. 15 Cc. 0.5 Cd. -1 C
The charge on a single sphere if the spheres are brought into contact with each other and then separated will be -1C
Hence, option (d) is the correct choice.
The net charge within a conductor is equal to zero. If a +q charge is applied to a solid sphere, it will be dispersed evenly throughout its surface. Inside the sphere, there will be no fee.
As a result, the electric fields will be identical to those of a hollow spherical.
If three conducting charged spheres are brought into contact and then separate, then total charges divide equally on each sphere and we can finch charge on a single sphere.
Here given, the magnitude of charges are 2C, 3C, 4C.
Then the charge on a single sphere will be -2C -3C +4C = -1 C
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Calculate the static thrust of the rocket and turbojet engines. The thrust T is the force necessary to prevent horizontal movement o the engine. Both engines exhaust a massflow of 40 kg/s. The ratio of air and fuel mass flowing into the turbojet is 50:1, and in its exhaust plane the velocity is 500 m/s and the pressure is the same as the ambient pressure. The rocket propellant exhausts at a velocity of 3000 m/s through an area of 0.2 m2. The pressure in the exhaust plane of the rocket is 0.15 MPa and the ambient pressure is 0.101 MPa.
The static thrust of the turbojet engine is 20,000 N, and the static thrust of the rocket engine is 36,000 N.
The calculation of the static thrust of a rocket and turbojet engine is determined by the following equation:
T = m × (Ve - V0)
where T is the thrust, m is the mass flow rate, Ve is the exhaust velocity, and V0 is the ambient velocity.
For the turbojet engine, the thrust can be calculated as follows:
T = 40 kg/s × (500 m/s - 0) = 20,000 N
For the rocket engine, the thrust can be calculated as follows:
P0 = 0.15 MPa, Pa = 0.101 MPa, Ve = 3000 m/s
A = 0.2 m2
m = 40 kg/s
P0 - Pa = (m × Ve²) / 2A
0.15 - 0.101 = (40 × 3000²) / (2 × 0.2)
T = (40 × 3000) / 0.2 = 36,000 N
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list at least four devices that are used to control a motor automatically. briefly describe the purpose of each device. select the best answer for each of the following.
There are four primary types of motor controllers and drives: stepper, servo, DC, and AC.
Which of the following control devices is beneficial in a circuit for a motor?One of the primary motor control devices is one that attaches or detaches the motors or loads from the line. The load is connected to the line by the main control devices, which comprise the motor contactor, starter, and controller.There are four primary types of motor controllers and drives: stepper, servo, DC, and AC. Each has an input power type that has been changed to the desired output function to fit with an application.They are inverse, integral, and derivative functions. Depending on how complex a process is and how much control is needed, these control approaches may be employed alone or in combination to apply automatic control to that process.To learn more about motor controllers refer to:
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An object that is initially at rest breaks up into two pieces of unequal masses when a spring-loaded device is released. If you compare the kinetic energy of the larger mass to that of the smaller mass immediately after they separate, which of the following statements is correct?
A) The kinetic energy of the larger mass is greater. B) The kinetic energy of the smaller mass is greater. C) The kinetic energies of the two masses are equal. D) The total kinetic energy is zero J.
"The kinetic energy of the bigger mass is higher," is the right statement.
Among the below-mentioned statement, the statement given in option (A) is correct.
The initial potential energy of the system is transferred to kinetic energy when a spring-loaded mechanism is released and an item breaks into two pieces of unequal mass. The total beginning potential energy must match the whole final kinetic energy, according to the rule of conservation of energy.
Because both masses' initial kinetic energy is zero, the end kinetic energy will be split in proportion to their masses.
As a result, the bigger mass has more kinetic energy than the smaller mass.
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consult multiple-concept example 10 to review an approach to problems such as this. a cd has a mass of 17 g and a radius of 6.0 cm. when inserted into a player, the cd starts from rest and accelerates to an angular velocity of 21 rad/s in 0.80 s. assuming the cd is a uniform solid disk, determine the net torque acting on it.
A mass of 17 g and a radius of 6.0 cm. when inserted into a player, the cd starts from rest and accelerates to an angular velocity of 21 rad/s in 0.80 s. assuming the cd is a uniform solid disk, the net torque acting on the CD is 16063.5 g cm²/s².
To determine the net torque acting on a uniform solid disk, we need to find the moment of inertia and the net force acting on it.
The moment of inertia (I) of a uniform solid disk can be found using the formula: I = (1/2)mr², where m is the mass and r is the radius. In this case, I = (1/2)(17 g)(6.0 cm)² = 612 g cm².
The net torque (τ) can be found using the formula: τ = Iα, where α is the angular acceleration. To find α, we need to use the formula: α = Δω/Δt, where Δω is the change in angular velocity and Δt is the change in time. In this case, Δω = 21 rad/s and Δt = 0.80 s, so α = Δω/Δt = 21/0.80 = 26.25 rad/s².
Finally, the net torque can be found using the formula: τ = Iα = (612 g cm²)(26.25 rad/s²) = 16063.5 g cm²/s².
Therefore, the net torque acting on the CD is 16063.5 g cm²/s².
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identify the ways in which ocean sediments can be used as direct evidence in solving different type of issues. (select all that apply.)
To map offshore pollution patterns, to identify sites for underwater construction projects, and to find offshore mineral resources, are the ways in which ocean sediments can be used as direct evidence of issues.
To map offshore pollution patterns: Changes in the composition and distribution of pollutants and trace elements in ocean sediments can provide evidence of environmental changes, including pollution.
To identify sites for underwater construction projects: The composition and physical characteristics of sediments can provide information about the suitability of a site for underwater construction, such as the stability of the sea bed and the potential for sediment movement.
To find offshore mineral resources: The distribution of specific mineral deposits in ocean sediments can be used to identify areas with potential for offshore mineral extraction.
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--The given question is incomplete, the complete question is:
"Identify the ways in which ocean sediments can be used as direct evidence in solving different type of issues. (Select all that apply.)
To map offshore pollution patterns
To identify sites for underwater construction projects
To find offshore mineral resources
To determine how climate has changed over geologic time"--
A body moves 5m in 3rd second and it moves 9m in the 7th second. Find the distance moved by the body between t = 5s and t = 8s.
tysm! :)
Answer:
34 m
Explanation:
I will assume the body is accelerating uniformly
accel = change in velocity/change in time
4 m/s / 4 s =1 m/s^2
So in second 4 it moves 6 Then for second 5 it moves 7 m then 8 m Then 9 m in second 7 Then 10 m in second 8
Total(5 thru 8) = 34m
a hockey puck at rest is equilibrium is it in equilibrium if it slides across ice at constant velocity
No, the hockey puck is not in equilibrium if it slides across ice at a constant velocity.
What is equilibrium?Equilibrium is a state of balance in a system where opposing forces are equal and there is no net change. In economics, equilibrium is a situation in which market supply and demand balance each other out and, as a result, prices become stable. When a market is in equilibrium, the amount of goods and services produced by suppliers is equal to the amount of goods and services demanded by consumers. In this state of balance, there is no tendency for prices to change. Equilibrium is an essential concept in economics, as it helps to explain how prices are determined in a market-based economy.
Equilibrium implies a state of balance, where the forces acting upon the object are balanced and the object is not accelerating. Since the hockey puck is moving across the ice surface at a constant velocity, there is an unbalanced force acting on it, causing it to move. Therefore, it is not in equilibrium.
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Which of the following statements are true concerning particles and antiparticles?Check all that apply.a) All particles have antiparticles.b) The antiproton can be described as the antiparticle to the proton.c) Antiparticles have a very long lifetime.d) Some particles serve as their own antiparticles.e) The proton can be described as the antiparticle to the electron.f) Antiparticles are produced in nuclear reactions.
The true statements concerning particles and antiparticles are:
b) The antiproton can be described as the antiparticle to the proton.
d) Some particles serve as their own antiparticles.
f) Antiparticles are produced in nuclear reactions.
Every charged particle has an antiparticle, which has the same mass and spin as it has but the opposite charge, according to the quantum field theory. All of the available experimental data supports this broad quantum field theory conclusion. The positron is the electron's antiparticle.
Antiparticles are subatomic particles with opposing electric charge and magnetic moment but the same mass as a particle of regular matter. Consequently, the positron (a positively charged electron) is the negatively charged electron's antiparticle.
An antiparticle is a subatomic particle that, by definition, has the same mass as its counterpart in a normal particle but the opposite magnetic moment and electric charge. For instance, the antiparticle of an electron is a positron.
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