How do i explain to kids how much water on earth is drinkable?

A golf ball is at rest on the grass when a golfer walks up and applies 10 N of force to it. There is 2 N of friction, resulting in 8 N of net force. What will happen to the ball?

Suppose you see two stars: a blue star and a red star. Which of the following can you conclude about the two stars? A) The blue star has a hotter surface temperature than the red star. B) The blue star is more massive than the red star.

Suppose a large truck on a hydraulic lift exerts 7,000 N of force on a piston with an area of 0.4 m2. The piston can only support 16,000 Pa of pressure. How much pressure is exerted by the truck on the piston?

Describe what happens to the energy of a wave if the frequency decreases and the frequency increased

The chemical formula for sodium fluoride is A) Na7F B) NaF C) NaF2 D) NaF7

The slope of the line on any speed vs time graph is equal to the objects?

True or False? a globular cluster is a group of older stars that are clustered together.

The doppler effect is the change in observed frequency due to

Which of the following is NOT a vector quantity? (A) Acceleration (B) Average velocity (C) Linear momentum (D) Potential energy (E) Force

Which of Newton's laws of motion is demonstrated by a hammer pounding a nail into a board