All waves carry energy true or false?

The acceleration due to gravity is lower on the Moon than on Earth. Which one of the following statements is true about the mass and weight of an astronaut on the Moon's surface, compared to Earth?

When you place a flat paper across 2 jars and place a jar on top of that piece of paper the jar falls because the paper is not strong enough to hold it.

Which object has the greatest momentum ... and why 1) a 12-kg mass moving at 1 m/sec 2) a 5-kg mass moving at 2 m/sec 3) a 9-kg mass moving at 3 m/sec 4) a 4-kg mass moving at 4 m/sec

Suppose your friend throws a baseball at an angle of LaTeX: 45^/circ45 ∘above the horizontal. If you are stationary relative to your friend, it will look like the ball follows a parabolic path when viewed from the side.

The global circulation of air is determined by the properties of air only. true or false

What is the main purpose of a simple machine?

given that a car's distance from a stop sign t seconds since it started moving is represented by d=t2-2t determine the car's average speed over each interval of elapsed time

A ball hits a wall. What is true about the magnitude of the force experienced by the ball compared with the force experienced by the wall? OA. The ball experiences more force than the wall. OB. The ball experiences less force than the wall.

A swimmer jumps from a waterfall thats is 8.5 m high from the lake below. How fast must he run horizontally to dive 2.5m away from the base of the waterfall?

What happens (as far as energy goes) when a molecule of gas strikes the wall of a container?