You toss a coin into a wishing well full of a liquid denser than the coin. Which of the following could be true?

Suppose an object is in orbit around the earth, the earth's gravitational pull some how becomes stronger than the objects forward motion, what will happen to the object?

How much power does it take to do 500 J of work in 10 seconds?

A wind turbine primarily uses which type of energy

Imagine that you're observing a collision. Which action would allow you to determine whether the collision is inelastic? Measure the force of impact. Observe whether the colliding objects change their shape.

Xiang is comparing the strong nuclear force and the weak nuclear force. Which describes the weak nuclear force only? Check all that apply.

Choose all the answers that apply. The sun: - is the largest star in our solar system - is the largest star in our galaxy - is made mostly of hydrogen and helium -will eventually run out of fuel and die -creates energy through nuclear reactions

Calculate the kinetic energy of a truck that has a mass of 2900kg and is moving at 55m/s.

In the calorimetry experiment which energy will be calculated during the heat exchange if water is used?

A turtle, moving at a constant velocity of 0.9 m/s due south, is in a race with a rabbit, who runs at a moderate speed of 9 m/s.

What might cause a theory to change over time?