Riders on the Tower of Doom, an amusement park ride, experience 2.0 s of free fall, after which they are slowed to a stop in 0.50 s. A) What is a 65 kg rider's apparent weight as the ride is coming to rest?
B) By what factor does this exceed her actual weight?

Positrons are spontaneously emitted from the nuclei of

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.

The solid that is formed and usually sinks to the bottom of a solution is the