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A person bounces up and down on a trampoline, even as always staying in contact with it. The motion is simple harmonic motion, and it takes 2.49 s to complete one cycle. The height of each bounce above the equilibrium position is 38.7 cm. Decide (a) the amplitude (b) the angular frequency of the motion. (c) What is the maximum speed attained by the person?
find how much energy is needed to remove one of the neutrons from a 3h atom to yield a 2h atom plus a neutron.the rest
An ocean fishing boat is drifting just above a school of tuna on afoggy day. Without warning, an engine backfire occurs on anotherboat 1.0 km away. How much time elapses before the backfire isheard (a) by the fish, and (b) by the fishermen?
suppose you adjust your garden hose nozzle for a hard stream of water. you point the nozzle vertically upward at a
A child throws a stone horizontally from the top of a 15 m cliff with a speed of 10 m/s. If the stone weighs 2 N, find its kinetic energy and speed
a 98-g piece of copper is heated in a furnace to a temperature tc. the copper is then inserted into a 150-g copper
A block rests on a spring and oscillates with a frequency of 4Hz and an amplitude of 7cm. What is the speed of the bead at the instant when it loses contact with the block
(a) What is the velocity of the boat at t = 18.89 s? (b) Find the total displacement of the boat.
A heavy sled is being pulled by two people as shown in the figure. The coefficient of static friction between the sled and the ground is ?s = 0.595, what is the sled\'s acceleration
The magnitudes of the four displacement vectors shown in the drawing are A = 20.0 m, B = 11.0 m, C = 12.0 m, and D = 21.0 m.
describe the enery transformations that take place as you swing on a swing.why do you have to keep pumping to keep swinging as high? what happens if you stop pumping
A photon energy 500KeV undergoes Compton scattering from the proton that is initially at rest. (a) what is the recoil Kinetic energy of the proton in eV?
A flint glass plate (n = 1.66) rests on the bottom of an aquarium tank. The plate is 6.50 cm thick (vertical dimension) and covered with water (n = 1.33) to a depth of 11.8 cm. Calculate the apparent thickness of the plate as viewed from above the wa..
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