The highest frequency radio waves are which type?

How does heating a gas rigid container change its pressure

Which waves require a medium for transmission

1. True or false: Simple machines reduce the amount of work needed to do a job. Explain your thinking.

Degausser creates a magnetic field that erases data from magnetic storage media. a. True b. False

The density of air on the Earth decreases almost linearly with height from 1.22kgm-3 at sea level to 0.74 kgm-3 at an altitude of 5000m. Atmospheric pressure at the Earth's surface on a particular day is 100000Pa.

James took two pea plants, placing one in a dark closet and the other on a sunny windowsill. Both are located in air-conditioned rooms. He then measured the growth of the pea plants after a week.

An object rolls east at a steady speed of 12m/s for 3.0 seconds. what distance did it travel

What is another name for Kepler's first law? A. law of periods B. law of ellipses C. law of universal gravitation D. law of equal areas in equal times

An airplane has a momentum of 22,125 kg*m/s. if the airplane moves at a speed of 25 m/s. what is its mass?

There are more electrons than protons in a negatively charged atom. 1. True 2. False