1. an airplane flies 800 kilometers east from denver to wichita in one hour. then the plane flies west back to denver in the same amount of time. which of the following best relates the speed and velocity of the two flights? a. the speed and velocity of the flights are not related for either flight. b. the velocity of the second flight is negative compared to the speed. c. the speed of the second flight is negative compared to the velocity. d. the velocity and speed of both flights are equal.

Acylinder with a movable piston contains 11.7 moles of a monatomic ideal gas at a pressure of 1.32×10^5 pa. the gas is initially at a temperature of 300 k. an electric heater adds 43200 j of energy into the gas while the piston moves in such a way that the pressure remains constant. cp=20.79 j k^−1 mol^−1 for a monatomic ideal gas, and that the number of gas molecules is equal to avogadro's number (6.022×10^23) times the number of moles of the gas. (a) what is the temperature of the gas after the energy is added? (b) what is the change in volume of the gas? (c) how much work is done by the gas during this process?

If jerome is swinging on a rope and transferring energy from gravitational potential energy to kinetic energy, is being done.

Using gravity, an elephant can pull a mouse towards it from the ground. true or false explain why. will give brainliest if answered fast and the best explanation