What is electric field?

Which is true about surface waves? The disturbance is only parallel to the motion of the wave. The disturbance does not have a specific motion. The disturbance is in a circular motion. The disturbance is only perpedicular to the motion of the wave.

Technician a says that some passenger vehicles use more than one evaporator. technician b says that some passenger vehicles use more than one condenser. who is correct?

How does a thermostat know how to keep hot soup hot and cold soup cold?

Which is NOT a characteristic of background radiation? A.) It is generally safe B.) It includes cosmic rays C.) It burns and causes lung cancer D.) It occurs naturally in the environment

A scientist mixes an unknown powder into a beaker of water. He then uses an indicator and finds that the pH of the resulting solution is 8.5. What can he infer from this observation? The unknown powder was acidic.

Which statement best describes a characteristic of gases?

A centimetre is ___ meter (s)

How could winds influence the temperature

Planets move around the sun in elliptical orbits. True. False

If a crane worker lifts a crate with a mass of 200 kg from the ground to a shipping container that is 45 meters off the ground, by how much has the worker increased the gravitational potential energy of the crate? (Recall that g = 9.8 m/s2) A.