"When an object moves downward, the change in the gravitational potential energy will"

Q: An escalator is used to move 2.3 * 10' people (60 kg each) per minute from the first floor of a…

A: Given: number of people=2.3*101 = 23 mass of each people m = 60 kg height h = 5m time taken t = 1 m

Q: When a body is brought down from a height H to height H the Potential Energy of the body increases.

A: What happens to the potential energy of a body when it is brought down.

Q: What is the work done by the gravitational force while you carry a bag horizontally and why?

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Q: A woman weighing 600 N steps on a bathroom scale containing a heavy spring. The spring is compressed…

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Q: Show that when a 3.0-kg book is lifted 2.0 m its increase in gravitational potential energy is 60 J.

A:

Q: "When an object moves downward, the change in the gravitational potential energy will" Decrease…

A: An object moving downwards, Effect on gravitational potential energy = ?

Q: What is the change in gravitational potential energy when a 12 kg brick is lifted a height of 25 m?…

A:

Q: A ball of mass m sits atop a table. The tabletop is a distance d above the ground. The gravitational…

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Q: A 4-N force is applied to a 2-kg object that is moving at 3 m/s. This force is parallel to the…

A: 7) Given:-  The object has a mass of m = 2 kg  The velocity of the object is v = 3 m/s  The force…

Q: When an object moves downward, the change in the gravitational potential energy will" O Decrease…

A: We need to comment on the value of gravitational potential energy of an object moving downwards.

Q: "When an object moves upward, the change in potential energy will be negative because the…

A:

Q: why is the maximum work a force can do on an object occur when the force is in the same direction of…

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Q: A cyclist is working at a rate of 0.20 kW when he is ascending a hill at a constant speed of 18 km…

A: Working rate = power = 0.20 kW  Speed = v = 18km/h = 5 m/s Mass of cyclists and bicycle = m = 80 kg…

Q: A crate of mass 10 Kg is pulled up a rough incline with an initial speed of 1.5 m/s. The pulling…

A: The expression for work done is,

Q: A car of mass 1500 kg is initially travelling at a speed of 12 m/s. The driver then accelerates to a…

A: Mass of the car,  Initial speed of the car,  Final speed of the car,  Distance traveled,

Q: To maximize the gravitational potential energy of an object, you should Avoid acceleration during…

A:

Q: If the height of the child of question 1 is doubled, does the gravitational potential energy…

A: Answer : Since the gravitation potential energy of an object is directly proportional to its height…

Q: A 0.25 kg apple falls from a tree branch 12.2 m above the ground into a basket 1.3 m above the…

A: Given: The mass of the apple is 0.25 kg. The initial height of the apple from the ground is 12.2 m.…

Q: An object that has gravitational potential energy must be which of the following? (A) moving B…

A: Option (c) is correct. Explanation - Since we know that P = mgh  So, an object that has…

Q: a student carries a bag weighing 5kg from the ground floor to his class on the second floor that 6m…

A: Here mass of the student ,m= 5Kg  Height ,h= 6m  Time taken ,t= 10 seconds

Q: Give 5 situations in which work is not done on it.

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Q: hen an object moves upward, the change in the gravitational potential energy will" Decrease Increase…

A: To find - a) The center of the object will lay at ?                b) when an object moves upwards ,…

Q: A student with a mass of 80.0 kg runs up three flights of stairs in 12.0 sec. The student has gone a…

A: The equation for the work done is given as,

Q: If the mass of the swimmer is 50kg. a. Potential Energy at the Top is = J b. Velocity of the swimmer…

A: We have a swimmer of mass m=50 kg drop (initial velocity u=0) from a height of h=15 m. We need to…

Q: A 3.0-kg rock is dropped from a height of 18.0 m. At what height is the rock's kinetic energy twice…

A: Given Data : The mass of the rock is given as m = 3.0Kg.  The height of the rock is given as H=…

Q: What is work done by Earth's gravitational force in keeping the moon in the orbit?

A: The work done by the earth's gravitational force in keeping the moon in the orbit is zero.

Q: A 5.0 kg cart initially at rest is on a smooth horizontal su A net horizontal force of 15 N acts on…

A: Given:-  The mass of the cart m = 5 kg  the initial velocity of the cart u =0  The net horizontal…

Q: A girl is carrying a school bag of 3 kg mass on her back and moves 200 m on a levelled road. The…

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Q: The driver of a passenger car puts the car to "rest" at the speed of 90 km/h, therefore, the car's…

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Q: A force of 240 N keeps a 900 kg car moving at a constant velocity of 10m/s. The car's engine…

A: Given data: Force (F) = 240 N Mass (m) = 900 kg Velocity (v) = 10 m/s Required: The power supplied…

Q: Calculate the work performed by a horse pulling a wagon forward with 150 N of force, across a bridge…

A: Force applied by the horse (F) = 150 N Length of bridge (L) = 50 m Mass of horse (M) = 50 kg

Q: Suppose a ball with a mass 10 kg is thrown upward from an elevation of 5.0m to 12.0 m above the…

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Q: A book is found to be sitting at the top of a book shelf with a height of 2.5 meters. If the book is…

A: Let the mass of the book = M Initial height = 2.5 m New position of book = 1 m lower than its…

Q: The gravitational potential energy stored in a box of weight 150 kgf is 1.5* 104 J. Find the height…

A: Write the given values with the suitable variables. W=150 kgf=150×10 NP=1.5×104 J Here, W is the…

Q: "When an object moves downward, the change in potential energy will be positive because the…

A: When an object moves downward, though its gravitational acceleration is positive, its potential…

Q: A body of 4.0 kg is lying at rest. Under the action of a constant force, it gains a speed of 5 m/s.…

A: Given values: Mass, m=4.0 kg Initial speed, u=0 m/s Final speed, v=5 m/s

Q: Two identical golf carts move at different speeds. The faster cart has twice the speed and therefore…

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Q: The work you do when pushing a shopping cart twice as far while applying double the force is A)…

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Q: A box with a mass of 6.0 kg is accelerated from rest by force along a floor at a rate of 2.0 m/s^2…

A: Work done is defined as product of force and displacement . W= Fs where F is force            s is…

Q: A climber of mass 100 kg (including the equipment she is carrying) ascends from sea level to the top…

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Q: A 1200-kg sports car is advertised to accelerate from 0-100 km/h (27.78 m/s) in 3.00 s. What is the…

A: Solution

Q: An escalator is used to move 2.1 * 10' people (60 kg each) per minute from the first floor of a…

A:

Q: Two stones, one with twice the mass of the other, are thrownstraight up and rise to the same height…

A: Formula for gravitational potential energy is,

Q: A cannonball has a mass of 13 kg and is fired vertically upwards from the surface of the Earth to a…

A: Given data: mass of cannonball, m  = 13 kg  The initial height of the ball, h1 = 27 m

Q: The moon revolves around the Earth in a nearly circular orbit, kept there by the gravitational force…

A: Work done = Fd cosθ Here, F is the force, d is displacement, θ is the angle between force and…

Q: A crane at a junkyard lifts a car with a mass of 1800 kg at a constant speed to a height of 16 m. It…

A: Given data:  Mass of the car (m) = 1800 kg Maximum height (hmax) = 16 m

Q: Why doesn't the change in gravitational potential energy equal change in elastic potential energy?

A: The elastic potential energy is due to the stretch or compression in spring. Gravitational potential…

Q: Can a centripetal force ever do work on an object? Yes No

A:

Magnetic Field Of Coaxial Cable

The word coaxial means same axis. So for a long straight cable to be coaxial, it must have concentric cylindrical shaped conductor around it. Coaxial cable (popularly called ‘coax’) has various applications ranging from current conductors to radiofrequency signal transmitters. This cable has lower emission losses and provides protection from electromagnetic interference which allows signals with less power to transmit over longer distances.For example, currents produced in the pickup of a stereo turntable generally travel to the amplifier through a coaxial cable.The self-inductance of a coaxial cable is another important characteristic, because it influences the propagation of electrical signals in the cable.