The sum of all the potential energy and kinetic energy is an object is equal to its

A-thermal energy

B-kinetic energy

C-potential force

D-force

A supernova is the explosion of a dying? a. medium-mass star. b. high-mass star. c. protostar. d. low-mass star.

If the same amount of heat is supplied to two different materials that have same mass. Why don't they have equal increasing of temperature?

A student throws a ball horizontally at 25 meters per second from a cliff 45 meters above the level ground. How far from the base of the cliff does the ball hit the ground? (Neglect air resistance)

How does a pith ball electroscope work

A 0.60-kilogram softball initially at rest is hit with a bat. The ball is in contact with the bat for 0.20 second and leaves the bat with a speed of 25 meters per second. What is the magnitude of the average force exerted by the ball on the bat? a.

A scientist has been tracking and studying a population of deer in Yellowstone National Park. He surveys the population every six months. Usually, the population is thriving and has a gene pool with a wide variety of traits.

How long will it take a bike traveling at 5 meters per second to travel 25 meters south? A. 5 s B. 0.2 s C. 5 s south D. 0.2 s south

Two masses are connected by a string which passes over a pulley with negligible mass and friction. One mass hangs vertically and one mass slides on a frictionless 30.0-degree incline. The vertically hanging mass is 6.

The coordinates 40 degrees north and 100 degrees east falls in what country?

Which type of radio waves have the highest frequency and are used in radar detection? microwaves x-rays waves infrared waves gamma waves