Three students use a meter stick to measure the width of lab table one records a measurement of 84cm, another one is 83.8cm and the third one is 83.78. Explain which one is recorded correctly

Aboxcar traveling at 12 m/s approaches a string of 5 identical boxcars sitting stationary on the track. the moving boxcar collides and links with the stationary cars and they all move off together along the track. what is the final speed of the cars immediately after the collision? (you may take the mass of each boxcar to be 18,537 kg.)

If the temperature were raised very high, classically what would we expect the heat capacity per object to be for this one-dimensional system? give a numerical value. chigh t = __ j/k/object (one reason for the discrepancy is that the high-temperature limit assumes that the number of oscillators is large (n > > 1), which is not the case in this tiny system.)

The earth is constantly spinning on its axis, like you might spin a basketball on your finger. it is this spinning of the earth that causes