A stone is thrown with an initial velocity of 20 meters per second straight upward from the edge of a cliff 100. meters above a canyon floor. The stone just misses the cliff’s edge on its way down. [Neglect friction.] Calculate the velocity of the stone 6.0 seconds after it is thrown.
Calculate the position of the stone 6.0 seconds after it is thrown.

Which changes of state do the labels represent? a: b: c:

When a vertical beam of light passes through a transparent medium, the rate at which its intensity i decreases is proportional to i(t), where t represents the thickness of the medium (in feet). in clear seawater, the intensity 3 feet below the surface is 25% of the initial intensity i0 of the incident beam. what is the intensity of the beam "10" feet below the surface? (give your answer in terms of i0. round any constants or coefficients to five decimal places.)

Abag of potato chips contains 2.00 l of air when it is sealed at sea level at a pressure of 1.00 atm and a temperature of 20.0 deg c. what will be the volume of the air in the bag if you take it with you, still sealed, to the mountains where the temperature is 7.00 deg c and atmospheric pressure is 70.0 kpa? assume that the bag behaves like a balloon and that the air in the bag is in thermal equilibrium with the outside air.