Physics, 01.12.2021 08:20 ijeomaokoro2264
An electric motor is used to hoist building supplies from the ground to the roof of a building.
A). How much work can the motor do in 12 seconds if its power output is 1.5 kW (1,500 W)?
B). How high can it lift a 131 kg bundle of shingles in that time?
Answers: 2
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How to tell if two objects are in thermal equilibrium 1.the objects have the same temperature 2.the objects are the same size 3.the objects are touching each other 4.the objects temperatures are changing
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Select the best definition for wavelength. the height of an oscillating electromagnetic wave the rate at which electromagnetic waves oscillate. the distance between two crests of an electromagnetic wave. the oscillations of electric and magnetic fields select the best definition for frequency. the oscillations of electric and magnetic fields. the height of an oscillating electromagnetic wave. the distance between two crests of an electromagnetic wave. the rate at which electromagnetic waves oscillate
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Physics, 22.06.2019 21:50
Which of the following is part of the explanation or description of electromagnetic waves? (select all that apply) a. electrically charged molecules in a medium transfer their energy to nearby electrically charged molecules. b. a changing electric field causes a changing magnetic field. c. magnetic molecules in a medium transfer their energy to nearby magnetic molecules. d. a changing magnetic field causes a changing electric field.
Answers: 3
An electric motor is used to hoist building supplies from the ground to the roof of a building.
A)...
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