Briefly describe how a sound wave is formed.

During which portion of the earth's revolution around the sun is the northern hemisphere tilted toward the sun?

Technician A says that battery load test loads the battery to one-half of its CCA rating. Technician B says that a good battery should be able to maintain higher than 9.6 volts for a 25 second test period.

Student saw a science fiction movie in which a spaceship was zooming through space. The sound of the engine was loud. However, he knew that this was not possible because sound cannot travel through space.

Which of the following frequencies are higher harmonics of a string with fundamental frequency of 150 Hz? (Select all that apply.) 500 Hz 300 Hz 600 Hz 400 Hz 200 Hz

Twenty students were surveyed to find out how many hours of tv they watch during a school week

During a transit, a passes in front of its parent star, temporarily decreasing the star's brightness by a small amount.

How much of each food dollar goes to the producer

What is the effect of a magnetic field on a stationary electric charge on a moving electric charge?

A ball is thrown upwards with an initial velocity of 25. o m/s, what is the velocity of the ball at 11.9 m from the ground?

Can rocks be weathered by wind and chemicals in the air