Which of the following is not an assumption that scientists must make about the natural world

Explain how an object can have force acting on it but not be acceleration?

What are the contract fforcs and non-contact forces?

Football player A has a mass of 210 pounds and is running at a rate of 5.0 mi/hr. He collides with player B. Player B has a mass of 190 pounds and is running in the same direction at 3.0 mi/hr.

A compressed spring has 16.2j of elastic potential energy when it is compressed 0.30m what is the spring constant of the spring

When an object is stationary, all of the forces acting on it are balanced

Explain the relationship between motion and frame of reference.

Two students are looking at a brightly lit full Moon, illuminated by the reflected light from the Sun. Consider thefollowing discussion between the two students about what the spectrum of moonlight would look like.

When performing a battery load test, what should the load be set to?

If you push on a wall of a building what will happen

A conductor, with outer surface labelled a, contains a cavity, inner surface b. In this cavity there is a conducting sphere of radius r, and surface c. The sphere carries a charge of 1 C, while the conductor a charge of 2 C.