A parachutist is falling with terminal velocity. Which of the following statement is not correct?

a) Gravitational potential energy is converted into kinetic energy of the air

b) G. P.E is converted into K. E of the parachutist

c) G. P.E is converted into thermal energy of the air

d) G. P.E is converted into thermal energy of the parachutist

Which body part transports oxygen removes waste materials in carries nutrients to the body as part of the circulatory system

The energy equivalent of the rest mass of an electron is

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.