A gas compressed at a constant pressure of 0.8atm from 9L to 2L, in the process 400J of energy leaves the gas by heat. what is the work done by the gas?

The slope of a velocity time graph over any interval of time gives the during that interval

Asled is being held at rest on a slope that makes an angle θ with the horizontal. after the sled is released, it slidesa distance d1 down the slope and then covers the distance d2 alongthe horizontal terrain before stopping. find the coefficient ofkinetic friction μk between the sled and the ground, assumingthat it is constant throughout the trip. find the coefficient of kinetic frictionμk. express your answer in terms of someor all of the variables d1, d2, and θ.

The law of reflection states that the angle of reflection is equal to the angle of