Which of the gases found in the earth's atmosphere is an important factor for weather conditions? a) oxygen b) hydrogen c) nitrogen d) water vapor

For the car in the picture ,in which direction is the normal force? -into the screen -down -out of the screen -up

Since the energy was not raising the temperature of the water during these segments, what was the energy used to do instead? your answer must include an explanation of what is happening to the molecules.

A200-n force is applied to the foot-operated air pump. the return spring s exerts a 2.6-n·m moment on member oba for this position. determine the corresponding compression force c in the cylinder bd. if the diameter of the piston in the cylinder is 40 mm, estimate the air pressure generated for these conditions. state any assumptions. enter a positive number for the compression force c.