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A 3.0 kg mess kit sliding on a frictionless surface explodes into two 1.5 kg parts, one moving at 2.1 m/s, due north, and the other at 4.0 m/s, 26° north of east. What is the original speed of the mess kit?
A railroad boxcar that has " due east" momentum of 15,000 kgm/sec collides with and couples with a similar boxcar that has "due west" momentum of 20,000kgm/sec. After collision, the combination has ( ) kgm/sec total of momentum.
Two bars of identical mass are at 32 °C. One is made from glass and the other from another substance. What is the specific heat capacity of the other substance
A 2 g lead (cp = 128 J/kg•°C) bullet travelling at 325m/s is stopped by the large tree. If half the kinetic energy of the bullet is transformed into internal energy and remains with the bullet whereas the other half is transmitted to the tree, wha..
A man stands on a scale in an elevator that is accelerating upward. compute the magnitude of the acceleration of the elevator?
A 12.0-V battery produces 215mA when it's across a 42.0? load. What's the battery's internal resistance
At its Ames Research Center, NASA uses its large "20-G" centrifuge to test the effects of very large accelerations (hypergravity) on test pilots and astronauts. In this device, an arm 8.84m long rotates about one end in a horizontal plane, and the..
A bat flies toward a wall, emitting a constant sound of frequency 2.00 rm kHz. This bat hears its own sound plus the sound reflected by the wall.
You hold a ruler that has a charge on its tip 2 cm above a small piece of tissue paper to see if it can be picked up, What is the minimum charge required to pick up the tissue paper
A particle of charge +2.56 x 10-6 C is 12.4 cm distant from a second particle of charge -1.55 x 10-6 C. Calculate the magnitude of the electrostatic force between the particles
A circle of rope of total mass 1kg and radius 1m is spinning at angular velocity 2.5 rad/sec about an axis through the center of the circle
A toy train rolls around a horizontal 1.5-m-diameter track. The coefficient of rolling friction is 0.13. What is the magnitude of the trains angular acceleration
A magnetic field is perpendicular to a 0.0417 m x 0.0636 m rectangular coil of wire that has 108 turns, What is the magnitude of the change in the magnetic field
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