Taking compass bearings is one of the maximum important ways of figuring out the danger of collision. good visibility is wanted to use this technique and a series or quantity of bearings need to be taken.
On smaller vessels bearings may be taken the use of a hand-bearing compass, on large vessels, a bearing or azimuth ring is used.
As soon as you perceive a danger of collision, you should perceive an appropriate movement to avoid collision to make sure the vessels will pass at a safe distance. You should then take that action to avoid collision as quickly as it's miles appropriate to accomplish that. digital Bearing lines are used to take the bearing of goals. The EBL extends from its own delivery role to the circumference of the radar display. If the bearing remains steady with decreasing variety, the chance of collision exists.
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How are ATP and glucose similar and different?.
ATP and glucose are similar and dissimilar in various ways. Major similarities and dissimilarities are as follows;
ATP molecules store smaller portions of energy, but every release just the proper amount to simply do work inside a cell. Muscle cell proteins, for instance, pull each other with the electricity launched whilst bonds in ATP ruin open. The procedure of photosynthesis additionally makes and uses ATP - for power to construct glucose! ATP, then, is the usable shape of energy for your cells. ATP is generally referred to as the "energy currency " of the cell.
A molecule of glucose incorporates a packet of chemical energy simply the right size for delivery and uptake by using cells. In your body, glucose is the "deliverable" shape of power, carried to your blood via capillaries to each of your a hundred trillion cells. Glucose is also the carbohydrate produced by photosynthesis, and as such is the close-to-everyday food for lifestyles.
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a tank is 10 m long, 4 m wide, 4 m high, and contains kerosene with density 820 kg/m3 to a depth of 3.5 m. (use 9.8 m/s2 for the acceleration due to gravity.)
A tank is 10 m lengthy, 4 m wide, four m excessive, and incorporates kerosene with density 820 kg/m3 to a intensity of 3.5 m. (use nine.8 m/s2 for the acceleration because of gravity.
Acceleration is the name we provide to any way where the velocity changes. when you consider that pace is a pace and a path, there are most effective two strategies so you can boost up: exchange your velocity or change your course—or exchange every.
Acceleration, price at which pace modifications with time, in terms of each speed and path. A point or an item moving in a directly line is accelerated if it accelerates or slows down. movement on a circle is increased even supposing the rate is consistent, due to the fact the course is constantly converting.
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The motorcyclist then decelerates at a constant rate for 2s. What is his acceleration.
The acceleration of the body is 2 [tex]\frac{m}{s^{2} }[/tex] while the deceleration is - 1.2 [tex]\frac{m}{s^{2} }[/tex] .
Acceleration can be defined as the rate of change of velocity with respect to time.
Deceleration is the reduction in speed or rate.
It has been stated in the question that the body accelerates for 3s and then decelerates to 2s. This implies that the total time that the object spent in motion is 5 s. So
vf = vi + at
as indicated in the equation ;
vf = final velocity
vi= initial velocity
a = acceleration
t = time taken
So the formula for acceleration will be;
a = [tex]\frac{vf - vi}{t}[/tex]
a = [tex]\frac{6 - 0}{3}[/tex]
a= 2 ms⁻²
This is the acceleration of motorcyclist. Now we will find the deceleration as follows;
a = [tex]\frac{vf - vi}{t}[/tex]
a= [tex]\frac{0 - 6}{5}[/tex]
a = -1.2ms⁻²
Your question is incomplete but most probably your full question was;
A motorcyclist starts from rest and reaches a speed of 6 m/s after travelling with constant acceleration for 3s.
a. What is his acceleration?
b The motorcyclist then decelerates at a constant rate for 2s. What is his
acceleration?
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on a distant planet the acceleration due to gravity is less than it is on earth. would you float more easily in water on this planet than on earth? explain
on the other planet, floating is no better or worse than it is on Earth. Since gravity is smaller on the other planet than it is on Earth, you would weigh less there because of this.
Archimedes principlea weight of water equal to your own weight must be displace by your body in order to float, according to the Archimedes principle.
On a specific planet, the acceleration caused by gravity is less than that of the on the planet with lower gravity than the arch, thus even if our body weight will be smaller, the weight of water displaced will also be lower. Our bodies sense an upward push in the water that is equivalent to the weight of the water that is displaced. Due to the decreased gravity, the water that has been displaced has a smaller weight, which means that the buoyant force will also be lower. Thus, it won't require us to sing. We shall appear to be the same. We'll swim along the same shore as V 2 on Earth.
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Two forces are acting on an object, f1 = 78 n upward and f2 = 26 n downward. What third force will cause the object to be in equilibrium?.
The magnitude of third force have to apply on the object be 56 N and it acting downwards.
What is force?The definition of force in physics is: The push or pull on a massed object changes its velocity. An external force is an agent that has the power to alter the resting or moving condition of a body. It has a direction and a magnitude.
Given that:
forces are acting on an object in upward direction: f₁ = 78 N.
forces are acting on an object in downward direction: f₂ = 26N.
Let third force F will cause the object to be in equilibrium, then:
78 -26 + F = 0
⇒ F = - 56 N.
Hence the magnitude of third force be 56 N and it acting downwards.
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a metal bar is hanging from a hook in the ceiling when it is suddenly struck by a ball that is moving horizontally (see figure). the ball is covered with glue, so it sticks to the bar. during this collision a metal bar is hanging from a hook in the ceiling when it is suddenly struck by a ball that is moving horizontally (see figure). the ball is covered with glue, so it sticks to the bar. during this collision the angular momentum of the system (ball and bar) is conserved about the hook because only gravity is acting on the system. the angular momentum of the system (ball and bar) is not conserved because the hook exerts a force on the bar. the angular momentum of the system (ball and bar) is conserved about the hook because neither the hook nor gravity exerts any torque on this system about the hook. both the angular momentum of the system (ball and bar) and its kinetic energy are conserved. both the linear momentum and the angular momentum of the system (ball and bar) are conserved.
The angular momentum of the system (ball and bar) is conserved about the hook because neither the hook nor gravity exerts any torque on this system about the hook.
The rotating inertia of an object or system of objects when they are moving about an axis that may or may not pass through them is described by a property known as angular momentum. The daily rotation of the Earth's axis and its yearly orbital revolution around the Sun give the planet its spin angular momentum. Since angular momentum is a vector quantity, both its magnitude and direction must be determined in order to fully represent it. The angular momentum of an orbiting object is proportional to its linear momentum, which is determined by dividing the mass (m) by the linear velocity (v) and by the perpendicular separation (r) from the axis of rotation.
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if an astronomer wants to find the distance to a star that is not variable and is located too far away for parallax measurements, she can:
If an astronomer wants to find the distance to a star that is not variable and is located too far away for parallax measurements, she can analyze the star's spectrum to determine its luminosity class, then interpret an H-R diagram to determine its luminosity.
Define Luminosity of a star?
The total amount of energy released by a star or other astronomical object each second is expressed as luminosity, or L. A star's luminosity is determined by its effective temperature, Teff, and radius, R.Roman numerals are used to identify luminosity classes, which indicate where a star belongs on the H-R diagram. The luminosity class and spectral type each provide information about the star's radius and temperature.
Astronomers can determine a star's supergiant, giant, or main-sequence star status based on its luminosity class.
Hence, if an astronomer has to determine the distance to a main sequence star that is not variable and is too far away to be measured by parallax, she can determine the star's brightness or surface color and then identify it on the H-R Chart.
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Which transaction cycle includes interactions between an organization and its suppliers?.
The exchanges between an organization and its suppliers are part of the spending cycle.
The spending cycle is the sequence of steps taken to obtain and pay for goods and services. These procedures entail determining what needs to be purchased, doing so, getting the items, and paying the sellers. The majority of the input to the expenditure cycle comes from the sales cycle, where purchasing needs are controlled by the quantity and kind of customer orders. The ordering and receiving of products and services is part of an organization's expenditure cycle. These items could be stock that the business intends to sell again or internal supplies to keep operations running properly.
The expenditure cycle includes the requisition of goods and services, supplier selection, ordering of goods and services, their receipt, and eventual payment for them.
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Derive an expression for the rotational inertia of the disk about the pivot. Pivot Pivul Figure > Figure Mech 3, A uniform disk of mass M and radius R is suspended vertically from pivot on its edge s0 that it is free t0 swing without friction, as shown in Figure above The disk is raised tO an initial angular displacement % with respect (0 the vertical, as shown in Figure 2 above. and released from rest The rotational inertia of the disk about its center of mass is MR? /2 . Express all algebraic answers in terms of the given quantities and fundamental constants. aS appropriale. (4) Derive an expression for the rotational inettia of the disk about the pivot
The time period of the disk T = 2π[tex]\sqrt{L/G}[/tex] = 2π[tex]\sqrt{3R/2g}[/tex]
I = 3/2 m[tex]r^{2}[/tex]
T = 2π [tex]\sqrt{I/Mgl}[/tex] = 2π [tex]\sqrt{l/g}[/tex]
l = I / mL
l = 3/2 R
Hence, Time period = 2π[tex]\sqrt{L/G}[/tex] = 2π[tex]\sqrt{3R/2g}[/tex]
A time period (denoted by the letter "T") is the amount of time needed for one full cycle of vibration to pass a specific point. Waves become shorter in duration as their frequency rises. Seconds are used to measure time. T = 1/f or f = 1/T are two mathematical expressions for the reciprocal relationship between frequency and time. The orbital period is how long it takes for something to circle (or orbit) another object.
The time it takes for a pendulum to swing back and forth between its two sides is known as its period.
T=2m/qB, where m is the electron's mass, describes the period of an electron on a helical orbit with an axis perpendicular to the magnetic field.
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Is solar energy similar to light energy?.
Solar energy is not similar to the light energy.
Solar Radiant or light energy is the energy produced by the Sun due to the nuclear fusion reactions and is transmitted to the earth through space by electromagnetic radiation in the form of quanta or packets of energy called photons.
Solar energy is not exactly similar to light energy. A lot of the energy radiated by the Sun is in the form of "light", i.e. it is visible to human eyes. But a lot of the energy is invisible to us, as some of the frequencies are outside the visible light spectrum. Whereas, Light energy is a kind of kinetic energy with the ability to make types of light visible to human eyes. Light is defined as a form of electromagnetic radiation emitted by hot objects like lasers, bulbs, and the sun. Light contains photons which are minute packets of energy.
Hence, solar energy is not similar to light energy.
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How long does it take oxygen to diffuse a distance of 1 mm in water at room temperature? (use d = 1x10^-9 m^2/s).
The time taken by oxygen to diffuse a distance of 1 mm in water at room temperature is 500 s.
Given that, travel distance = 1 mm
Diffusion constant for the molecule of oxygen in water = 1* 10⁻⁹ m²/s
We know the formula, t = x²/2D
where, t is time taken for diffusion in seconds
x is the distance (1 mm = 10⁻³ m)
D is the diffusion constant
t = x²/2D = (10⁻³)²/2*1* 10⁻⁹ = 1000/2 = 500 s
Thus, the time taken for oxygen to diffuse at room temperature is 500 s.
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A small airplane at an altitude of 5000 feet is flying East at 300 feet per second, and you are watching it with a small telescope as it passes directly overhead. Refer to the figure above.
a. What is the slope of the telescope 5, 10, and 20 seconds after the plane passes overhead?
b. What is the slope of the telescope t seconds after the plane passes overhead?
c. After it passes overhead, is the slope of the telescope increasing, decreasing, or staying the same?
The solution for the first requirement from question a is provided as follows:
at 5 sec.:
speed = 300 ft/sec
distance = speed * time
= (300 ft/sec)
= 1,500 ft
slope = vertical distance/horizontal distance
Round off your answers to two decimal places.
(Answer should be in this format:)
a. at 10 sec, slope = _____at 20 sec, slope = 0._____
b. slope at t seconds = _____/t
c. _____
As the slope of the telescope 5,10 and 20 seconds of the plane is d=vt where d is distance, v is velocity, and t is time 39.81 sec.
Notice that the connection among the 2 regarded facets and the perspective may be represented with the aid of using the tangent characteristic for the reason that facets are contrary and adjoining to the perspective.
tangent=opposite adjacent.At t=5, the gap is d=300(5)=1500. Hence, computing for θ the usage of the tangent ratio.tanθ=50001500tanθ=103θ=tan−1(103)≈73.30∘Hence, the slope at t=5 is about 73.30∘.At t=10, the gap is d=300(10)=3000. Hence, computing for θ the usage of the tangent ratio.tanθ=50003000tanθ=53θ=tan−1(53)≈59.04∘Hence, the slope at t=10 is about 59.04∘.At t=20, the gap is d=300(20)=6000. Hence, computing for θ the usage of the tangent ratiotanθ=50006000tanθ=56θ=tan−1(56)≈39.81∘Hence, the slope at t=20 is about 39.81∘.b) Since the adjoining facet may be represented with the aid of using 300t, then making use of the trigonometric TOA [tex]tanθ=5000300ttanθ=503tθ=tan−1(503t)[/tex]Thus, the slope of the telescope t seconds after the aircraft passes overhead is given with the aid of using[tex]θ=tan−1(503t).[/tex]c) From the solutions in (a), it's far obvious that because the aircraft actions similarly from the factor overhead, the slope of the telescope decreases.Read more about slope :
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Find the direction of the net gravitational force exerted on the spacecraft by the earth and moon. State the direction as an angle measured from a line connecting the earth and the spacecraft.
The gravitational force between sun and moon is 1.946 x 10²⁰N.
We are given that,
Distance of the moon from the earth = d = 3.84 x 10¹⁰cm = 3.84 x 10⁸m.
Mass of the earth =M₁= 5.96 x 10²⁷g = 5.96 x 10²⁴kg
Mass of the moon = M₂ = 7.33 x 1025 g = 7.33 x 1022 kg
Force acting between the earth and the moon is,
F = [G(m₁m₂/d²)]
Where, G is universal gravitational constant and thus putting the values on the above equation ,
F= (6.67 x 10⁻¹¹) x [(5.96 x 10²⁴) x (7.33 x 10²²)] / (3.84 x 10⁸)²
F = = 1.946 x 10²⁰N
The gravitational force between the earth and the moon is 175 times greater than that between the earth and the sun. High tide and low tide are caused by gravitational forces operating between the sun and the earth as well as between the earth and the moon.
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a generator rotates at 81 hz in a magnetic field of 0.055 t . it has 850 turns and produces an rms voltage of 180 v and an rms current of 55.0 a .
According to the given statement Peak current= 84.86 A and Area of each turn = 0.029 m^2
Briefing:
The peak value of current can be obtained from Irms= 0.707Io. Where Io is the peak current.
Hence;
Irms= 55.0A
Io= Irms/0.707
Io = 50.0/0.707
Io= 70.72 A
Vrms= 0.707Vo
Vo= Vrms/0.707= 180/0.707 = 254.59 V
From;
V0 = NABω
Where;
Vo= peak voltage
N= number of turns
B= magnetic field
A= area of each coil
ω= angular velocity
But ω= 2πf = 2×π×81= 508.68 rads-1
Substituting values;
A= Vo/NBω
A= 254.59/508.68×0.055×508.68
A= 0.010 m^2
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A 15. 0-kg load of bricks hangs from one end of an inextensible rope that passes over a small, frictionless pulley. A 28. 0-kg counterweight is suspended from the other end of the rope. The system is released from rest. What is the magnitude of the acceleration of the system? what is the tension acting on the rope?.
The magnitude of the acceleration of the system in which a 15.0-kg load of bricks hangs from one end of an inextensible rope that passes over a small, frictionless pulley when released from rest is 2.96 m / s²
For bricks,
F = T - W
m a = T - m g
15 a = T - ( 15 * 9.8 )
T = 147 + 15 a
For counterweight,
F = T - W
- m a = T - m g
- 28 a = T - ( 28 * 9.8 )
T = 274.4 - 28 a
Equating both values of T,
147 + 15 a = 274.4 - 28 a
43 a = 127.4
a = 2.96 m / s²
Substituting a in any equation of T,
T = 147 + 15 a
T = 147 + ( 15 * 2.96 )
T = 147 + 44.44
T = 191.44 N
Therefore,
The magnitude of the acceleration of the system is 2.96 m / s²
The tension acting on the rope is 191.44 N
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A mass on a spring oscillates with simple harmonic motion of amplitude A about the equilibrium position x = 0. Its maximum speed is vmax and its maximum acceleration is amax.
(a) What is the speed of the mass at x = 0?
____vmax
(b) What is the acceleration of the mass at x = 0?
____amax
(c) What is the speed of the mass at x = A?
____vmax
(d) What is the acceleration of the mass at x = A?
____amax
When the mass is traveling toward x=+A at the equilibrium position (x=0), the maximum velocity occurs.
What is velocity?Velocity is defined as a vector expression representing the change in position over time of an object or particle. Acceleration is the rate at which the speed and direction of a moving object vary over time.
In simple harmonic motion, the acceleration is zero at the object's maximum speed. Maximum mass displacement in SHM equates to maximum acceleration. The momentum calculator uses the equation p=mv, or momentum (p) equals mass (m) times velocity (v).
Thus, when the mass is traveling toward x=+A at the equilibrium position (x=0), the maximum velocity occurs.
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What are some problems in the neighborhood?.
8 of the most typical neighbor conflicts. the physical look of your home, pets, children, and property lines, alleged criminal activity, Parking, breaches of the building code.
Which neighborhoods come to mind?In the Rome area, foxes are frequently encountered. There was a guy who resided inside a hollow tree in my neighborhood. Over time, the neighborhood has progressively altered. We lived in the neighborhood exactly like everyone else, and we never went hungry.
How do individuals reside in a community?People choose to live in communities where they can rely on one another in the event of significant emergencies such as earthquakes, floods, thievery, or serious health issues.
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you lift a book with your hand in such a way that it moves up at constant speed. while it is moving, what is the total work done on the book?
Your hand is used to raise the book so that it rises steadily. Since there is no net force exerting any force on the book, there is no total work.
A force is an influence that can alter an object's motion in physics. An object with mass can change its velocity, or accelerate, in response to a force. Force can also be conceptualized as a push or a pull. A force is a vector quantity since it has both magnitude and direction. At this level, using the terms "push" or "pull" to describe a force is entirely appropriate. A force is not something that an object "has in it" or that it "contains." A force is applied to one object by another. There are both living and non-living things in the concept of a force. A force is a push or pull that an object experiences as a result of interacting with another object.
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simple em waves a radio station in golden broadcasts at a frequency of 826 khz. at a point some distance from the transmitter, the magnetic-field amplitude of the electromagnetic wave from the station is 4.8 e-11 t. Find the electric field and wavelength.
The electric field of the simple EM radio wave is 14.46× 10⁻³ NC⁻¹ and the wavelength of the same wave is 363.1 m.
Frequency of wave = λ = 826 Khz
Amplitude of the wave = B = 4.8 × 10¹¹
Speed of light = c = v = 3 × 10⁸ m/s
Wavelength = λ =
= Using speed of EM wave equation,
= c = λ
= 3 × 10⁸ = 826 × 10³ λ
= λ = 363.1m
Now, the electric field of the EM radio wave is = E =
= Using electric field of wave equation E = Bv,
= E = 4.8 × 10¹¹ × 3 × 10⁸
= E = 14.46× 10⁻³ NC⁻¹
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When a ball of mass m is dropped from rest from a heighth, its speed just before landing is v. Now,suppose a second ball of mass 4m is dropped from rest froma height h/4. (A) Just before ball 2 lands, is its speed4v,2v,v, v/2, or v/4? (b) Choose the bestexplanation from among the following:
I. The factor of 4 cancel; therefore , the landing speed isthe samee
II. The two balls land with the same kinetic energy;therefore, the ball mass 4m has the speed v/2.
III. Reducing te height by a factor of 4 reduces the speed bya factor of 4
I'm thinking the higher the ball, the more the velocity remainconstant, but the energy is increased
The two balls have the same energy when they land, hence the ball with mass 4m is moving at a speed of v/2.
How speed is that?Speed is defined as the ratio of the distance traveled to the time required to cover that distance. Speed is a scalar since it just has a vector and no magnitude.
What different types of speeds exist?Normal speed: The ratio of an object's total distance traveled to the whole time it took it to cover that distance is its average speed. Instantaneous speed: An object's instantaneous speed is the speed it is moving at at any given time while it is moving at a variable speed.
Briefing:Under constant acceleration,
the distance an object moves is given by d = 0.5 A T^2
d = 0.5 A (2T)^2 d = 0.5 A 4T^2 d
= 2AT^2 and 2AT^2/(0.5 AT^2)
= 2/0.5 = 4
kinetic energy is E = 0.5MV^2
Mass = M, velocity = 2V
Second object. Mass = 4M,
velocity = V Kinetic energy
first object is: KE = 0.5M(2V)^2 = 0.5M4V^2 = 2MV^2 Kinetic energy
KE = 0.5 4MV2 = 2MV2 is the second object. They are also the same.
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air pressure in the atmospehre always decreases when altitude increases bcause air pressue is determined by the weight of the overlying air. air rising through the atmosphere expands a s less pressue acts on it and, in turn, its tempereature
On Earth, the air becomes less dense and loses pressure as it rises in height. There is a bad correlation between the two variables.
What is atmosphere?The layers of gases that envelop a planet or other celestial body are its atmosphere. About 78% of the gases in the Earth's atmosphere are nitrogen, 21% are oxygen, and 1% are other gases.
What is air pressure?Everything you touch is pressed upon by the weighty air that surrounds you. This pressure is referred to as air pressure or atmospheric pressure. It is the force that the air above a surface applies to it while gravity pulls the surface toward Earth. A barometer is frequently used to measure atmospheric pressure.
What is altitude?Height above sea level is how altitude is defined. Air pressure and height are two different but related ideas. In fact, they are so closely related that many airplane altimeters base their altitude calculations on air pressure. And one can also do the opposite; mountain climbers can determine whether they need to bring an oxygen supply by forecasting the air pressure on a mountaintop with a known elevation.
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a student is trying to determine the tensions in the strings connecting the boxes. if the acceleration of the system and the pulling force f are known, which of the following pairs of equations could be used to find the tensions?
The pair of equations that could be used to find the tensions is given as
m3a3 = Tb & m2a2 = Ta - Tb
How do we find tensions in a string?To find the force of tension in a string, we use the formula T = mg + ma.
We know that tension is described as the pulling force transmitted axially by the means of a string, a rope, chain, or similar object, or by each end of a rod, truss member, or similar three-dimensional object; tension might also be described as the action-reaction pair of forces acting at each end of said elements.
If the three boxes are pulled to the left by strings with negligible mass on a horizontal surface, the masses of the boxes are m1, m2, and m3, where m3>m2>m1. If the acceleration of the system and the pulling force are known, the we have the tension equation is given as m3a3 = Tb & m2a2 = Ta - Tb.
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What is the main evidence for the existence of dark matter?.
Radio astronomical observations of spiral galaxies are the main source of evidence for dark matter. Large collecting telescopes are used in radio astronomy to gather radio frequency radiation from space.
The information will next be analyzed to reveal evidence for extra matter that cannot be explained by the luminous stuff that has been discovered.There is convincing proof that dark matter exists, at the very least. Even though scientists still don't fully understand dark matter, there is ample proof that it—or something similar—exists. Nothing we can immediately observe bridges the gap between the whole mass of the cosmos and what we can directly observe.To know more about dark matter
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which of the following identifies and describes the equipment needed to best determine the amount of water that infiltrated the soil? a soil triangle should be used to determine the soil texture in both pallets before and after the water is added to both pallets. a scale should be used to measure the mass of both pallets immediately after pouring the water over the pavers and immediately after the one-hour wait time. a turbidity meter should be used to determine the amount of particulate matter in both pallets before and after the water is added to both pallets. a ruler should be used to measure the level of water above the pavers in both pallets immediately after pouring the water over the pavers and immediately after the one-hour wait time.
The equipment needed to determine best the amount of water that infiltrated the soil is a ruler that should be used to measure the water level above the pavers in both pallets immediately after pouring the water over the pavers and immediately after the one-hour wait time.
Thus, the correct option is D.
What is the infiltration soil?Infiltrаtion is the downwаrd entry of wаter into the soil. Infiltrаtion rаte is expressed in inches per hour. Rаinwаter must first enter the soil for it to be of vаlue. Wаter moves more quickly through the lаrge pores of а sаndy soil compаred to slower movement through а clаy soil with smаll pores. Infiltrаtion is аn indicаtor of the soil’s аbility to аllow wаter movement into аnd through the soil profile. Soil temporаrily stores wаter, mаking it аvаilаble for root uptаke, plаnt growth аnd hаbitаt for soil orgаnisms.
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a bucket is filled with water, and then a hole 3.00 mm in diameter is punched in the bucket, 17.0cm below the surface of the water. with what force is the water shot from the bucket?
The average force of the beam expert is 648,365.
What is average force?The force applied by a body that's traveling at a definite velocity for a definite period of time is called average force.
mass of pile driver (m) = 1900 kg
distance of pile driver to steel beam (s) = 4.80m
depth of steel driven (d) = 13.4= 0.134 m
acceleration due to gravity (g0 = 9.8 m/s^{2}
calculate the average force exerted on the pile driver by the beam.
from work done = force x distance
work done = change in potential energy of the pile driver
equating the two equations above we have
force x distance = m x g x (s - d)
f x 0.134= 1900 x 9.8 x (4.80- (-0.134))
d = - 0.134because the steel beam went down at we are taking its
initial position to be an origin point which is 0
f = ( 1900x 9.8 x (4.80- (-0.134)) ) ÷ 0.134
=648,365
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The force at which water is shot is 1.18 × 10^-2 N
How do you calculate water pressure at a depth?
Water pressure at a depth is given by , P=gh, where h represents the difference between the height of the water's surface and the height of the measurement point, such as the outlet of a hose leaving a storage tank,
In the given problem
diameter of hole = 3mm
radius,r = 1.5mm
Pressure of the hole = ρgh
ρ=1000 Kg/m^3
Force = Pressure × Area
= ρgh × πr^2
= 1000× 9.8× 17× 10^(-2) × 3.14 × (1.5× 10^(-3))^2
= 1.18× 10^(-2)
Therefore the force at which water is shot is 1.18× 10^(-2)
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Slot machines pay off on schedules that are determined by the random number generator that controls the play of the machine. For example, on average, the machine might pay off every 100 pulls, but sometimes two pulls are required and sometimes several hundred pulls are required. Slot machines are a real-world example of a ________ schedule
Slot machines are a real-world example of a __variable ratio______ schedule.
What is variable ratio ?A variable-ratio schedule in operant conditioning is a partial reinforcement schedule where a response is reinforced after an arbitrary number of responses. 1 A consistent, high rate of response is produced by this schedule. A reward based on a variable-ratio schedule is one that can be found in gambling and lottery games.
The individual will continue to engage in the target behavior in variable ratio schedules because he is unsure of how many responses he must give before receiving reinforcement. This leads to highly stable rates and increases the behavior's resistance to extinction.
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Question:
Identify the correlation you would expect to see between the weight of baggage someone carries and the speed at which he or she walks. Explain.
Correlation
Correlation is a way of measuring the relationship between two variables. The stronger the relationship between the variables, the higher the magnitude of the correlation coefficient.
It shows a negative correlation; As the weight of the luggage increased, the walking speed of the person decreased.
A scatterplot displays the strength, direction, and form of a relationship between two quantitative variables. The correlation coefficient measures the strength of the relationship. Calculating the Pearson correlation coefficient requires the assumption that the relationship between two variables is linear. Increasing weight in any static friction environment will always decrease acceleration for a given applied force. Heavier objects have a greater gravitational force and less acceleration for heavier objects. It turns out that these two effects exactly cancel out so that falling objects have the same acceleration regardless of mass. Overall, you can say that for every additional percent that you shift easier, you also shift by one percent faster. This makes sense, because you use less energy when you're lighter, but your cardiopulmonary system remains unchanged.
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when a solid melts?
a. the temp of the substance decreases
b. heat energy leaves the substance
c. heat energy enters the substance
d. the temp of the substance increases
When a solid melts Heat energy enters the substance
The way that the word "heat" is defined in thermodynamics is very different from how we often use it. Heat is the thermal energy that is transmitted when two systems with different surface temperatures come in contact. Heat is denoted by the letters q or Q, and the unit of heat measurement is joules.
Since heat is defined in the context of a process that permits energy to be transported, it is occasionally referred to as a process quantity. Although the heat that a hot cup of coffee transfers to your palm may be analyzed, the heat that the cup of coffee itself contains cannot. Heat is another significant characteristic.
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What is the lowest frequency in electromagnetic?.
The lowest frequency in electromagnetic will be of radio waves.
In the electromagnetic spectrum the lowest frequency range is 300 GHz to 3 kHz and these are known as radio waves.
Lowest frequency in the range of electromagnetic spectrum will be Radio waves . Since , Radio waves have lowest frequency that means they also have highest wavelength out of all . Whereas the maximum frequency in electromagnetic spectrum will be of gamma rays .
The frequency ranges from 300 G Hz to 3 kHz
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The radio waves has lowest frequency in electromagnetic spectrum.
Radio waves, on the other hand, have the lowest energies, longest wavelengths, and lowest frequencies of any type of EM radiation. In order from highest to lowest energy, the sections of the EM spectrum are named: gamma rays, X-rays, ultraviolet radiation, visible light, infrared radiation, and radio waves. A radio wave is generated by a transmitter and then detected by a receiver. An antenna allows a radio transmitter to send energy into space and a receiver to pick up energy from space. Transmitters and receivers are typically designed to operate over a limited range of frequencies.
Hence, radio waves lies lowest at electromagnetic spectrum.
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6.00 g bullet, traveling horizontally at a speed of 400 m/s, is fired into a 1.0 kg wooden block which is initially at rest on a horizontal surface. the bullet passes all the way through the block, and emerges on the other side with a speed of 100 m/s. the block then slides a distance of 0.20 m along the surface before coming to rest.
6.00 g bullet, traveling horizontally at a speed of 400 m/s is initially at rest on a horizontal surface then moment conservation V=0.4 m/s
Mass bullet = 6*10⁻³
Mass of block=2kg
Pi=Pf
(5*10⁻³)400+0=120*(6*10⁻³)+2v
v=0.7 m/s
Ki=1/2mv²=1/2ˣ6*10⁻³ˣ400²
Ki=1/2ˣ6ˣ10⁻³ˣ16ˣ10⁴
Ki=400j
Kf=1/2mv²=1/2ˣ6*10⁻³ˣ120²
Kf=36J
moment conservation
V=0.4 m/s.
The principle of momentum conservation states that momentum is neither created nor destroyed but only changed by the action of forces as they are described by Newton's laws of motion. This applies to a particular problem domain. The only thing that happens when two bodies collide is that their momentum changes. Thus, for bodies colliding, changes in momentum are always equal and opposite. The momentum of the other body must decrease by the same amount if the momentum of the first body increases. As a result, momentum always remains constant.
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