Sally can run 3 flights of stairs in 25 seconds. Each stair is 0.15 meter tall and there are 15 stairs in one flight. Sally has a mass of 55 kg. Her legs are 0.75 meters long, and we assume that gravity is 9.8 m/s2

Debbie places two shopping carts in a cart corral she pushes the first cart which then pushes a second cart what force is being exerted

On a day when the barometer reads 75.23 cm, a reaction vessel holds 250 ml of ideal gas at 20 celsius. an oil manometer ( ρ= 810 kg/m^3) reads the pressure in the vessel to be 41 cm of oil and below atmospheric pressure. what volume will the gas occupy under s.t.p.?

If two parallel light rays hit a mirror, they will not be parallel to each other after they reflect.