If the vector represents velocity this number represents the speed

which statement about waves is false? a. waves transfer matter b. waves can change direction c. waves can interact with each other d. waves can transfer energy to matter

There is a force between two charges; if the distance between the two charges is doubled, by what factor does the force between them change?

3. Can there be forces acting on an object at rest? Explain why or why not.

What is the best description of the destructive interference of light? A. a longitudinal wave meets transverse light wave B. two waves have the same direction of displacement C. a mechanical wave meets an electromagnetic wave D.

All of the listed human actions affect the nitrogen cycle with the exception of the A) use of agricultural fertilizers. B) runoff of pesticides into streams and lakes. C) production of sewage and animal wastes from farms.

A 0.300-kg puck, initially at rest on a horizontal, frictionless surface, is struck by a 0.200-kg puck moving initially along the x axis with a speed of 2.00 m/s. After the collision, the 0.200-kg puck has a speed of 1.00 m/s at an angle of? = 52.0

Ariella drove 40 miles to see her cousin. The trip took Ariella 2 hours. Then drove from her cousins house to a store for 30 miles. It took Ariella to hours to Ariella to arrive at the store. What was the average speed of the trip

A meandering river is flowing in a broad, alluvial valley and the river is silt-laden but also moves sand and a small amount of gravel. The government decides to build a dam across the valley for power and flood control.

The Sun 1. Sara has made this list to summarize what she learned in science class today: 1. Core 2. Radiation zone 3. Convection zone What is the best title for her list? a. The Layers of the Interior of the Sun b. The Layers of the Sun c.

Jack rolled a marble down a ramp and recorded the potential energy and kinetic energy of the marble at different positions on the ramp, as shown in the table.