Physics, 21.04.2021 15:10, jimarieb08

Which of the following does NOT involve the use of an electromagnet? A. recording a song onto an audiotape
B. picking up paperclips using a bar magnet
C. lifting heavy metal objects with a crane at a junkyard
D. recording a television show onto a videotape

Answers: 1

Show answers

Other questions on the subject: Physics

Physics, 22.06.2019 03:30, sere50

The focal length of a relaxed human eye is approximately 1.7 cm. when we focus our eyes on a close up object, we can change the refractive power of the eye by about 16 diopters. (a) does the refractive power of our eyes increase or decrease by 16 diopters when we focus closely? explain. (b) calculate the focal length of the eye when we focus closely.

Answers: 3

continue

Physics, 22.06.2019 11:10, ladybee05

Avolcano erupts next to a grassland area in a valley. a. describe three ways in which material released by the volcano could impact the grassland area. b. describe three ways in which the grassland ecosystem could recover after a volcanic eruption.

Answers: 3

continue

Physics, 22.06.2019 17:00, marchellepenuliar

Sawyer is studying diffraction. he draws a diagram of a plane wave to show how light waves travel. which best describes sawyer’s error? the wave fronts should be perpendicular to the direction in which the waves move. the arrow showing the direction of movement of the waves should be pointing to the left. the arrow showing the direction of movement of the waves should be pointing downward. the wave fronts should be both parallel and perpendicular to the direction in which the waves move.

Answers: 3

continue

Physics, 22.06.2019 20:30, cupcake3103670

Aball is thrown from the top of a building with an initial velocity of 21.9 m/s straight upward, at an initial height of 51.6 m above the ground. the ball just misses the edge of the roof on its way down, as shown in the figure. (a) determine the time needed for the ball to reach its maximum height. (b) determine the maximum height. (c) determine the time needed for the ball to return to the height from which it was thrown, and the velocity of the ball at that instant. (d) determine the time needed for the ball to reach the ground. (e) determine the velocity and position of the ball at t = 5.35 s.

Answers: 1

continue

Do you know the correct answer?

Which of the following does NOT involve the use of an electromagnet? A. recording a song onto an a...