Does friction cause mechanical energy to change to thermal energy

Sitting in a chairlift, Rebecca has a gravitational potential energy of 5,997.6 J. If Rebecca has a mass of 51 kg, how high off the ground is the lift? OA) 6 m OB) 12 m OC) 118 m OD) 612 m

Two astronauts on opposite ends of a spaceship are comparing lunches. One has an apple, the other has an orange. They decide to trade. Astronaut 1 tosses the 0.132 kg apple toward astronaut 2 with a speed of 1.25 m/s. The 0.

NASA launches a satellite into orbit at a height above the surface of the Earth equal to the Earth's mean radius. The mass of the satellite is 780 kg. (Assume the Earth's mass is 5.97 1024 kg and its radius is 6.38 106 m.

You have a mass of 55kg and are riding your frictionless skateboard, which has a mass of 5kg, in a straight line at a speed of 4.5 m/s when a friend standing on a balcony above you drops a 2.5 kg sack of flour straight down into your arms.

Red light has a longer wavelength than violet light. Which has the greater frequency?

How far can a person run in 15 minutes if he or she runs at an average speed of 16 kilometers / hours?

In the parts that follow select whether the number presented in statement A is greater than, less than, or equal to the number presented in statement B. Be sure to follow all of the rules concerning significant figures. Statement A: 2.

All your cells contain proto-oncogenes, which can change into cancer-causing genes. Why do cells possess such potential time bombs? A. Cells produce proto-oncogenes as a by-product of mitosis. B.

What is the mass of a basketball that is shot with 12N of force at an acceleration of 4m/s2?

Why do metals have similar properties?