Which of the following is correct?
A) The distance measured by the observer on the spaceship is less than the distance measured by the observer on Earth.
B) The distance measured by the observer on the spaceship is greater than the distance measured by the observer on Earth.
C) Both observers measure the same distance.

Which expression allows you to determine the mechanical advantage of an inclined plane? a. height of plane / input force b. length of plane / input force c. length of plane / height of plane d. height of plane / length of plane

In the sport of parasailing, a person is attached to a rope being pulled by a boat while hanging from a parachute-like sail. a rider is towed at a constant speed by a rope that is at an angle of 15 ∘ from horizontal. the tension in the rope is 1900 n. the force of the sail on the rider is 30∘ from horizontal. what is the weight of the rider? express your answer with the appropriate units.

In a system, when potential energy decreases, then entropy also decreases. true false