Which of the following are devices that utilize electromagnets? Select all that apply? relay switches
doorbells
crane pulleys
security locks

What is the fate of the electrons that interact with a specimen in an electron microscope?

An equinox occurs when a. neither end of earth's axis is tilted toward or away from the sun. b. the north end of earth's axis is tilted away from the sun. c. the north end of earth's axis is tilted toward the sun. d. earth's axis is parallel to the sun's rays. select the best answer from the choices provided a b c d

When measuring volume, why is it important to use the correct tools and units to attain the greatest accuracy? use specific examples from the lab to support your answer. (5 points)