When a sound wave encounters a barrier, what happens?

A ball is kicked 10 meters north, 5 meters west, 15 meters south, 5 meters east, and 5 meters north. Find the total displacement and the total distance it traveled.

How are motors and generators different?

2. As the ball in the air falls back into the boy's hand, the speed of the ball A. goes up and then goes down B. stays the same C. decreases D. increases

How many 90-W, 120-V light bulbs can be connected to a 20-A, 120-V circuit without tripping the circuit breaker?

Read the scenario and solve these two problems. When traveling at top speed, a roller coaster train with a mass of 12,000 kg has a velocity of 30 m/s. The kinetic energy of the train at top speed isJ.

A sealed of gas at 101,000 Pa is expanded, reducing the volume from 0.5m3 to 0.25m3.

Explain one effect that burning fossil fuel has on the environment

What components of the atom are found outside of the nucleus? protons electrons neutrons all are found in the nucleus

What is the general relationship between the state of matter and density?

In the lab, Michelle and Brian measured the acceleration of a cart rolling on an inclined track with one block under one end, and found that the acceleration was 0.482 m/s2.