What method of thermal energy is at work when heat lamps are used to warm up baby chickens?

A - radiation

Which statement about a flat magnet that can stick onto a refrigerator is true

To calculate the frequency of an electromagnetic wave, you need to know the speed of the wave and its a. wavelength. b. intensity. c. refraction. d. amplitude.

When can we be certain that the average velocity of an object is always equal to its instantaneous velocity?

How much work is done in holding a 15N sack of potatos while waiting in line at the grocery store for 3 minutes

a 70 kg skydiver opens her parachute. The force due to air resistance is now 1200 N. what is the acceleration of the skydiver

At a certain harbor, the tides cause the ocean surface to rise and fall a distance d (from highest level to lowest level) in simple harmonic motion, with a period of 12.4 h. how long does it take for the water to fall a distance 0.

What is the average speed of an object with a total distance traveled of 45 meters in 50 seconds

Some machines do not multiply the force that is applied to them

An automotive research facility is testing a new design on bumpers to determine the force at which it will break.

Gravity is greater when there is