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A deep-space probe moves away from Earth by a speed of 0.78c. An antenna on the probe requires 4.0 s, in probe time, to rotate during 1.0rev. How much time is required for 1.0 rev according to an observer on Earth?
A rod 20 cm long moves in a plane perpendicular to a magnetic field of 0.065 T. The velocity of the rod is perpendicular to its length. Find the speed of the rod if the potential difference between the ends is 6.9 V. ____________ m/s
Let be the magnitude of the kinetic energy of puck A at the instant it reaches the finish line. Likewise, is the magnitude of the kinetic energy of puck B at the (possibly different) instant it reaches the finish line.
A uniform ladder of length L and weight w is leaning against a vertical wall. The coefficient of static friction among the ladder and the floor is the same as that among the ladder and the wall. If this coefficient of static friction is µs = 0.510, D..
question1a 100-kg athlete is performing vertical leap to test his leg strength. he leaves ground at 3.20 ms zooms
The time-varying current in an LC circuit where C = 11.9 µF is given by i(t) = (1.25 A) sin (1310t), where t is in seconds. What is the total energy of the circuit?
The angular momentum of a flywheel having arotational inertia of 0.240 kg m2 aboutits axis decreases from 3.70 to 1.30 kg m2/s in2.10 s. What is the average power of the flywheel
A 1.50-kg ball has zero kinetic and potential energy. Samdrops the ball into a 6.00-m deep well. Just before the ball hitsthe bottom, what is the sum of its kinetic and potential energy
WPHY AM Radio transmits on a frequency of 970 kHz, omnidirectionally, with a power of 20 kW. What is WPHY's intensity where you live
A weight W is supported by attaching it to a vertical uniform metal pole by a thin cord passing over a pulley having negligible mass and friction. The cord is attached to the pole 40.0 cm below the top and pulls horizontally on it. The
what is the net force exerted by these two charges on a third charge 50.5 placed between and at -1.230 ? your answer
A disk of radius R carries an amount charge +Quniformly distributed over its surface. Be able to find a vectorexpression for the electric field at a point on the axis of thedisk at a distance z from the center.
An initially stationary 4.1 kg object accelerates horizontally and uniformly to a speed of 12 m/s in 3.3 s. how much work is done on the object by the force accelerating it
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