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A grandfather clock has a pendulum length of 0.7 m and mass bob of 0.4 kg. A mass of 2 kg falls 0.8 m in seven days to keep the amplitude (from equilibrium) of the pendulum oscillation steady at 0.03 radians. What is the Q of the system?
A hospital's linear accelerator produces electron beams for cancer treatment. The accelerator is 1.4m long and the electrons reach a speed of 0.98c.
Consider an LC circuit with L = 13 mH and C = 2285 pF. At what frequency is the reactance of the inductor equal to the reactance of the capacitor
An object, with mass m and speed v relative to an observer, explodes into two pieces, How much kinetic energy is added to the system during the explosion
A spacecraft is in circular Earth orbit at 6000 altitude. By how much will its altitude decrease if it moves to a new circular orbit where its orbital period is 5% lower
At the instant the traffic light turns green, an automobile that has been waiting at an intersection starts ahead with a constant acceleration of 2.40, How fast is the automobile traveling when it overtakes the truck
From the shore of a frozen lake, Eli Manning throws a 2 kg football at a velocity of 20 m/s. What is their velocity immediately after they catch it
A neutron star is the remnant left after certain supernovae (explosions of giant stars). What is a typical neutron star density in g/cm3
A roller coaster car moves 200 ft horizontally and then rises 135 ft at an angle of 30 degrees above the horizontal, What is its displacement from its starting point
Starting from rest, a speedboat reaches a speed of 2.30 m/s in 1.2 s. What is the boat's speed after an additional 2.50 s has elapsed, assuming the boat's acceleration remains the same.
Four point charges have the same magnitude of 2.19 10-12 C and are fixed to the corners of asquare that is 4.20 cm on a side. Three ofthe charges are positive and one is negative. Determine the magnitude of the net electric field that exists at th..
A light string is wrapped around a 0.20-kg hollow 0.080-m-radius hoop. What is the angular acceleration of the hoop
The charges 5.92 ?C, ?8.8 ?C, 40.7 ?C, and ?86 ?C are located inside a submarine, Calculate the net electric flux through the submarine
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