Physics, 28.11.2019 05:31 alazayjaime1423
Arailroad freight car with mass 30,000 kg collides is moving in the +x direction at 2.00 m/s when it collides with a stationary caboose car. the two cars couple together, and move down the track at vf. during the collision, 50.0% of the original kinetic energy is lost to thermal energy, sound, vibrations, and so on. find the mass of the caboose in kg.
Answers: 1
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Zeros that follow non-zeros numbers and are also to the right of a decimal point are significant
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Which lists the pairs of plates in order from least to greatest in terms of the work done to move the electron?
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Physics, 22.06.2019 18:30
Two 2.0-cm-diameter disks face each other, 1.0 mm apart. they are charged to ±10 nc. what is the electric field strength between the disks? a proton is shot from the negative disk toward the positive disk. what launch speed must the proton have to just barely reach the positive disk?
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Physics, 22.06.2019 22:00
Aparticle of mass m is placed in a one-dimensional box of length l. the box is so small that the particle’s motion is relativistic, so that e p2/2m is not valid. (a) derive an expression for the energy levels of the particle using the relativistic energy–momentum relation and the quantization of momentum that derives from connement. (b) if the particle is an electron in a box of length l 1.00 1012 m, nd its lowest possible kinetic energy. by what percent is the nonrelativistic formula for the energy in error?
Answers: 1
Arailroad freight car with mass 30,000 kg collides is moving in the +x direction at 2.00 m/s when it...
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