What measures the amount of displacement in a transverse wave?

Observations show that interstellar clouds can have almost any shape and

He latent heat of vaporization for ethyl alcohol is 854 j/g. the amount of energy, rounded to the nearest whole number, needed to change 5.20 grams of ethyl alcohol from a liquid to a gas is

What was the purpose of the apollo program? to put a man in orbit to launch a spy satellite to launch a space station to put man on the moon