When an object falls, it trades gravitational potential energy for kinetic energy, accelerating toward the ground. calculate the potential energy change an object of mass m would experience falling from a height h. if there were no air friction, so that all of the energy was converted to kinetic energy, what would its final velocity be in terms of g and h?

How many seconds does it take a pebble released from rest off a bridge to fall 29.4 m ? what is the pebble's speed when it has fallen 29.4 m ?

The pressure, volume, and temperature of a mole of an ideal gas are related by the equation pv = 8.31t, where p is measured in kilopascals, v in liters, and t in kelvins. use differentials to find the approximate change in the pressure if the volume increases from 14 l to 14.6 l and the temperature decreases from 375 k to 370 k. (round the answer to two decimal places.)

Two polarizers are oriented at 70∘∘ to one another. unpolarized light falls on them. what fraction of the light intensity is transmitted?