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A 3500-kg vehicle moving east at 50 km/h collides head-on with a6000=kg vehicle moving west at 40 km/h. The two vehicles locktogether. Which way will the wreckage move, and what is the momentum?
A charge of 810 C was passed through a wire in 5.70min. What was the average electric current during that interval
A heat engine has an effiency of 35.0 % and recieves 150 K of heat per cycle. How much heat does it exhaust in each cycle
In 6.00 days the number of radioactive nuclei decreases to one-eight the number present initially. What is the half-life (in days) of the material
An electric heater carries a current of 16.5 A when operating at a voltage of 1.50 102 V. What is the resistance of the heater
A 100 g granite cube slides down a 40* frictionless ramp. At the bottom, just as it exits onto a horizontal table, it collides with a 200g steel cube at rest. How high above the table must the granite cube be released to give the steel cube a spee..
An electron initially at rest moves from one plate of a capacitor to another, through a potential di?erence of 2476 V, Find the speed with which the electron strikes the positive plate
A puck of mass 80.0 g and radius 4.30 cm slides along an air table at a speed of 1.50 m/s, What is the Angular Speed about the center of mass
A bus makes a trip according to the position time graph shown in the drawing. Find the average velocity (magnitude & direction) of the bus during each of the segments labelled A, B, & C?
At the same instant that a motionless 9.6 kg ball is dropped from 27 m above the Earth's surface, a second ball, what is the velocity of the center of mass of the two-ball system
An intergalactic rock star bangs his drum every 1.10 s. A person on earth measures that the time between beats is 2.10 s
A 90.0 cm pendulum is released from a small angle. After 109 oscillations the amplitude is one half of its original value. The damping is proportional to the speed of the pendulum bob. Find the value of the damping coefficient, ?, (in Hz).
A man ties one end of a strong rope 7.64 m long to the bumper of his truck, 0.505 m from the ground, and the other end to a vertical tree trunk at a height of 3.90 m. Compute the magnitude of the torque on the tree
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