An experiment is designed to test the relationship between the initial height of a basketball before it dropped to the height of its rebound bounce. the height of the rebound bounce is measured using a scale positioned behind the ball

in the above experiment, which condition would not be controlled

Observations show that interstellar clouds can have almost any shape and

Amichelson interferometer operating at a 600 nm wavelength has a 3.02-cm-long glass cell in one arm. to begin, the air is pumped out of the cell and mirror m2 is adjusted to produce a bright spot at the center of the interference pattern. then a valve is opened and air is slowly admitted into the cell. the index of refraction of air at 1.00 atm pressure is 1.00028.how many bright-dark-bright fringe shifts are observed as the cell fills with air?

Which best describes the difference between internal and thermal energy?