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How much time does a meter stick moving at 0.100c relative to an observer take to pass the observer? The meter stick is parallel to its direction of motion.
An electron is moving at a speed of 8.0 103 m/s in a circular path of radius of 2.0 cm inside a solenoid. Find the strength of the magnetic field inside the solenoid
A field mouse trying to escape a hawk runs east for 6.0m , darts southeast for 3.8m , then drops 1.8m down a hole into its burrow
You have a 1.5 m long copper wire. You want to make an N-turn current loop that generates a 2.4 mT magnetic field at the center, What will be the diameter of your coil
A 40-cm-long tube has a 40-cm-long insert that can be pulled in and out. A vibrating tuning fork is held next to the tube. What is the frequency of the tuning fork
a vertical cylinder of cross-sectional area 0.06 m2 is fitted with a tight-fitting friction- less piston of mass 5.4
A computer hard disk starts from rest, then speeds up with an angular acceleration of 190 rad/s(squared) until it reaches its final angular speed of 7200 rpm
An archer pulls her bowstring back 0.432 m by exerting a force that increases uniformly from zero to 227 N. What is the equivalent spring constant of the bow
A man stands at the midpoint between two speakers that are broadcasting an amplified static hiss uniformly in all directions. Find the total sound intensity that the man hears when he is at his initial position halfway between the speakers
A 16 g rifle bullet traveling 180 m/s buries itself in a 3.5kg pendulum hanging on a 2.7 m long string, which makes the pendulum swing upward in an arc. find the horizontal component of the pendulum's maximum displacement.
Water flows over Victoria Falls, which is 128 m high, at an average rate of 1.30 106 kg/s. how much power would be produced by these falls
It takes sound waves of frequency 500 Hz 14.7 ms to make a round trip through a hollow pipe of length 7.5 m filled with helium. What is the speed of sound in helium
A train is traveling at 30.0m/s relative to the ground in still air. The frequency of the note emitted by the train whistle is 262Hz . The speed of sound in air should be taken as 344m/s . What frequency f approach is heard by a passenger on a tra..
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