Suppose the gravitational force between two spheres is 100 N. If the distance between the spheres is halved, what is the new gravitational force between them?

Which of the following is NOT a way that machines provide a mechanical advantage? a. Change direction b. Change distance c. Change power d. Chance force

An apple falls from a tree and hits the ground 9.98 m below. with what speed will it hit the ground

How does air leaving a ballon push the car forward?

Earth is the third planet from the sun. Which two planets are closer to the sun than Earth is?

An archery bow is drawn a distance d = 0.29 m and loaded with an arrow of mass m = 0.094 kg. The bow acts as a spring with a spring constant of k = 112 N/m, and the arrow flies with negligible air resistance.

What type of intermolecular forces would you expect to find in a pure liquid sample of carbon tetrachloride?

Describe how rockets lift off.

Which of the pollutants shown in Figure 4-2 are considered to contribute to the pollution problem known as acid precipitation?

A billiards ball B rests on a horizontal surface and is struck by another billiards ball A of the same mass m = 0.2 kg. Ball A is initially moving at 18 m/s and is deflected 28° from its original direction. Assume the collision is elastic.

A model rocket is fired vertically from the ground with a constant acceleration of 45.3 m/s2 for 1.46 s at which time its fuel is exhausted. What is the maximum height (in m) reached by the rocket?