Physics, 01.11.2019 01:31, jkgtmhuip3503
Consider applying newton’s second law to a man riding an elevator (perhaps to calculate his acceleration). show answer incorrect answer which of the following forces must be considered? choose all that apply. the force that the man’s feet exert on the floor of the elevator the force of gravity on the elevator the force the elevator cable exerts on the elevator car the force that the man’s head exerts on his neck the force that the elevator floor exerts on the man’s feet the force of gravity on the man
Answers: 2
Physics, 22.06.2019 00:00, madskate9993
During physical science, ms. greene challenged her students to produce an energy transformation. james and jill wrapped a 4-inch nail with a coil of fifty turns of wire. they connected one end of the coil to one terminal of a knife switch. they connected the other terminal of the knife switch to the battery. finally, they connected the end of the coil to the other terminal of the battery. james held the tip of a 1-inch nail near the flat end of the 4-inch nail. jill closed the knife switch quickly and then opened it. the 1-inch nail was pulled toward the 4-inch nail. what is the best explanation of why the nail moved? a) electrical energy was converted to mechanical energy in the 1-inch nail. b) the 4-inch nail became an electromagnet and the magnetic force attracted the 1-inch nail. c) the electric current in the 4-inch nail was converted to mechanical energy in the 1-inch nail. d) the 4-inch nail had a positive charge and the 1-inch nail had a negative charge. opposites attracted.
Answers: 1
Physics, 22.06.2019 06:00, Bengynease2598
What will a positive and a negative charge do if they are separated from each other?
Answers: 3
Consider applying newton’s second law to a man riding an elevator (perhaps to calculate his accelera...
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