Physics, 17.04.2020 20:33 carolinamleal04
The scrapyard uses a big electromagnet to move around large metal objects such as cars and appliances. If the operator needed to drop a car to a new space, what would he need to do for this to happen?
A) The magnetic field cannot be turned off.
B) The magnetic field can be turned off by switching off the current.
C) The magnetic field can be reversed by switching the poles of the core.
D) The magnetic field can be decreased by placing it in proximity to an opposite pole.
Answers: 3
Physics, 22.06.2019 06:30
2kg of refrigerant 134a undergoes a polytropic process in a piston-cylinder assembly from an initial state of saturated vapor at 2 bar to a final state of 12 bar, 80 degree c. a)determine the work for the process in kj. b)sketch the process on a p-v diagram.
Answers: 2
Physics, 22.06.2019 07:00
Which statement is best supported by the information in the chart? wave y is moving the fastest. wave x is moving the fastest. all of the waves are moving at the same speed. all of the waves have the same value of wavelengths per second.
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Physics, 22.06.2019 11:30
Which accounts for an increase in the temperature of a gas that is kept a constant volume
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Physics, 23.06.2019 04:00
Can anyone plz answer any of these. even if its one it will
Answers: 1
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