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A boy of mass m runs with a speed v and jumps onto a sled on an icy pond. The sled was at rest before the boy jumped onto it. After the jump, the sled and boy move at a speed v/4. What is the mass of the sled?
a tsunami a tidal wave of of wavelength 4.8 *10^5 m travel at 200m/s in the open ocean determine the time between two successive incoming waves
Two blocks each of mass m = 2.98 kg are fastened to the top of an elevator, If the strings can withstand a maximum tension of 88.0 N, what maximum acceleration can the elevator have before the upper string breaks
A student holds a tuning fork oscillating at 256 Hz. He walks toward a wall at a constant speed of 1.20 m/s. What beat frequency does he observe between the tuning fork and its echo
obtain the equation of motion for a 125g mass at the end of a perfectly elastic spring which when stretched 14.5 cm from equilibrium, find the maximum velocity and total energy of the mass
A 4.0-m-wide swimming pool is filled to the top. The bottom of the pool becomes completely shaded in the afternoon, How deep is the pool
A circular loop of wire in the horizontal plane carries a counterclockwise current, as viewed from above. compute the magnitude of the magnetic field at the center of the loop?
A block of mass=0.750kg is fastened to an unstrained horizontal spring whose spring constant is k=65.0N/m. The block is given a displacment of 0.220m and then released from the rest.
A metal ball with a mass of 3.77·10^-6 kg and a charge of +4.79 mC has a kinetic energy of 6.21·10^8 J. It is traveling directly at an infinite plane of charge with a charge distribution of +4.05 C/m^2. If it is currently 1.39 m away from the plane o..
A small glass bead has been charged to 60.0 . A metal ball bearing 2.70 above the bead feels a 1.50×10?2 downward electric force. What is the charge on the ball bearing
A tortoise can run with a speed of 0.10m/s, and a hare can run 20 times as fast. What is the length of the race
Suppose you inherit 3.05 mol of gold from your uncle (an eccentric chemist) at a time when this metal is selling for $15.00 per gram. what is this gold worth
A camera lens is initially set at f/16 for a shutter speed of 1/160s. what is the proper shutter speed at this setting
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