ten seconds after starting from rest will the magnitude of the angular acceleration of point a be greater than, less than or equal to the magnitude of the angular acceleration of point b? *

An object weighs 40n in air, weighs 20n when submerged in water and 30n when submerged in a liquid of unknown density. what is the density of the liquid?

The number of passengers who arrive at the platform of a subway station for the 10 am train is a random variable with a mean of 120 and a variance of 16. find the lower bound of the probability that there will be between 100 and 140 passengers (round off to second decimal place).

Ryan is examining the energy of the particles in a bar of gold. what is ryan most likely studying?