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Two railroad cars, each of mass 6500 kg and traveling 98 km/h in opposite directions, collide head-on and come to rest. Find how much thermal energy is produced in this collision? J
A Michelson interferometer uses light from glowing hydrogen at 486.6nm. As you move one mirror, 555 bright fringes pass a fixed in the viewer
An automobile of mass 1500 kg moving at 25.0 m/s collides with a truck of mass 4500 kg at rest. What are the final velocities of the car and truck
Small telescopes are often advertised as "200 power" or "magnifies 200 times." As someone knowledgeable about astronomical telescopes, how would you progress such advertisements.
a sample consisting of 1.5 mol of perfect gas molecules with cpm= 20.8J/Kmol is initally at 230kPa and 315 K. calculate the final volume and temperature and work done
we have a container of a hot ideal monatomic gas. the volume of the container is 25 liters. the temperature of the gas
what is the force of kinetic friction acting on the skier. avoid the length of her car and her reaction time.
Suppose a block with mass 2.30kg is resting on a ramp. If the coefficient of static friction between the block and the ramp is 0.420.
An object is made of glass and has the shape of a cube 0.11 m on a side, according to an observer at rest relative to it. What is the moving observer's speed (in units of c) relative to the cube
A parallel-plate capacitor is formed from two 2.20 cm multiplied by 2.20 cm electrodes spaced 2.0 mm apart. What is the charge (in nC) on each electrode
A ball is dropped from the top of the building. The ball falls3 times farther during its last second in freefall than its thirdsecond of freefall. how long was the ball in the air
The security alarm on a parked car goes off and produces a frequency of 1200 Hz. The speed of sound is 343 m/s. At what speed are you driving
question a 182 mh inductor whose windings have a resistance of 8.20 omega is connected across a 9 v battery with an
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