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A 0.621-kg basketball is dropped out of a window that is 5.26 m above the ground. The ball is caught by a person whose hands are 1.51 m above the ground.
(a) How much work is done on the ball by its weight? What is the gravitational potential energy of the basketball, relative to the ground, when it is
(b) released and
(c) caught?
(d) What is the change (PEf - PE0) in the ball's gravitational potential energy?
on a hot day a house is kept cool by an air conditioner. The outside temperature is 32 degrees celsius and the inside temperature is 21 degree celsius. what is the mechanical power that it requires to hold the inside temperature constant
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Two identical guitar strings are prepared such that they have the same length (1.91 m) and are under the same amount of tension, What is the wave propagation speed on the guitar strings
When an object is placed 15 cm in front of a thin lens, a virtual image is formed 5.0 cm away from the lens, Calculate the location of the final image
A neutron star is the remnant left after certain supernovae (explosions of giant stars). What is a typical neutron star density
Consider the 642 N weights held by two cables shown. The left-hand cable had tension T2 and makes an angle of thelta2 with ceiling. The right-hand cable had tension 460 N and makes an angle of 47 degrees with the ceiling.
A charge of -330e is uniformly spread through thevolume of a sphere of radius 1.95 cm. What is the volume charge density in that sphere
A passenger hanging onto a strap notices that an adjacent unused strap makes an angle of 14? to the vertical. What is the radius of the turn
What is momentum of the block
Assume we have an infinitely long wire carrying a current of 2-A. It is bent into an L-shape extending into positive infinities along the x- and y- axes. Find out the magnitude of the magnetic field at a point P with coordinates (0.3 m, 0.3 m).
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