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The force of an explosion on the piston of a gasoline engine is due to the change of momentum of the gas particles. What must be the speed of the molecules of gas after the explosion if 0.6 g of gas exerts a force of 1400 N on the piston, in an explosion that lasts 0.001 s? Assume that all the gas molecules have the same velocity after the explosion and that they are heading directly at the piston.
Estimate the volume of your body. (Consider your body to be a cylinder having a radius of about 6 inches (or 0.15 m) and a height of about 1.5 meters
A solid disk rotates in the horizontal plane at an angular velocity of 0.049 rad/s with respect to an axis perpendicular to the disk at its center. what is the angular velocity of the disk
A standing wave in a pipe with both ends open has a frequency of 680 Hz. The next higher harmonic has a frequency of 1020 Hz, How long is the pipe
Suppose after charging a 4 µF capacitor to 8 V, you connect it to the second uncharged capacitor of 7 µF. What voltage will your voltmeter read across the second capacitor
Find out the friction force on the box
A fisherman standing on the edge of a pier hooks a fish on the surface of the water, and reels in the fishing line at a constant 0.50m/s. If the fisherman's fishing rod is a height of 3.0 m above the water, at what speed is the fish moving (horizonta..
A meterstick (L = 1 m) has a mass of m = 0.133 kg. Initially it hangs from two short strings: one at the 25 cm mark and one at the 75 cm mark. What is the tension in the left string right after the right string is cut
One mole of an ideal gas does 1408 J of work on the surroundings as it expands isother- mally to a final pressure of 1.6 atm and vol- ume of 29L. Find out the initial volume.
Two boats are initially separated by distance d and head directly toward one another. The skippers of the boats want to arrive at the same time at the point that is halfway between their starting points.
Furthermore, describe any differences in kinetic energy and gravitation potential energy among these balls while they hit the ground.
An electron travelling east with velocity 7.0 x10^5 m/s enters the same electric field region as in the previous problem. How far does it go before being turned backward
In an ice show a 65.0 kg skater leaps into the air and is caught by an initially stationary 85.0 kg skater. How much kinetic energy is lost?
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