14. L= = L (1-(v/c)2)/2
A stationary scientist measures the length of a meter stick that is passing by at 0.6
times the speed of light (0.6c). How long does he perceive the stick to be?

What happens to the velocity of the car when the upward pull of the cable is greater than the downward pull of gravity as the car rises toward the top?

Consider an insulating crystal, made up of layers of atoms. what form would you expect the temperature dependence of the phonon heat capacity to approach at extremely low temperatures if the interlayer coupling is i)very strong (rigid coupling), and ii) very weak. explain.

It is really hard for me right know