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A disk with radius R is aligned in the y-z plane with its center coinciding with the x-axis at x = 0. The disk has a central hole of radius R/2. The surface charge density is ?rho. Calculate the electric field and electric potential on the x-axis as a function of x.
An object falls a distance h from rest. If it travels 0.5h inthe last 1.00s find the time and the height of its fall
A golfer hits a shot to a green that is elevated 3 m above the point where the ball is struck. find the speed of the ball just before it lands
If it takes 9.19e5 J of heat to bring 0.30 kg of ice at -17*C to water vapor at 108*C, what is the specific heat of the water vapor
A seasoned mini golfer is trying to make par on a tricky hole #5. at what speed must the golfer hit the ball to land the ball in the hole? Assume a frictionless surface and the acceleration due to gravity is 9.81 m/s2
A 79 kg pole-vaulter falls from rest from a height of 4.6 m onto a foam-rubber pad. The pole-vaulter comes to rest 0.30 s after landing on the pad. compute the athlete's velocity just before reaching the pad.
A car is designed to get its energy from a rotating flywheel by a radius of 1.50 m and a mass of 400kg. Before a trip, the flywheel is attached to an electric motor, which brings the flywheel's rotational speed up to 5000 rev/min. How much energy is ..
A yo-yo has a mass of 0.774 kilogram, a moment of inertia of 0.01 kgm2, and a string that is 0.764 meter in length. obtain what was its angular velocity just before it started up
A rotating wheel requires 5.00 seconds to rotate 28.0 revolutions. Its angular velocity at the end of the 5.00 second interval is 100.0 rad/s. Calculate the constant angular acceleration of the wheel
How kinetic energy is related to linear momentum and What is the difference between elastic and inelastic collisions
Assume that a 16.5 m/s wind is blowing across the roof of your house. The density of air is 1.29 kg/m3. Conclude the reduction in pressure (below atmospheric pressure of stationary air) that accompanies this wind.
A rifle with a barrel length of 65cm fires a 10g bullet with a horizontal speed of 400m/s. How long does it take the bullet to come to rest
How do we understand the vector and scalar potentials in terms of virtual photons? Specifically, I mean curl-free magnetic vector and gradient-free electric scalar potential fields, where no electromagnetic waves or physical forces are present.
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