Physics, 16.10.2020 04:01 bella51032
How does an electric generator work?
A. The axle rotates the armature in the magnetic field of a permanent magnet, which induces an electric current.
B. The armature rotates the axle in the magnetic field of a permanent magnet, which induces an electric current.
C. The axle rotates the armature in the magnetic field of an electromagnet, which induces an electric current.
D. The armature rotates the axle in the magnetic field of an electromagnet, which induces an electric current.
Answers: 1
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Time remainin52: 42the chart shows data for a moving object.which conclusion is best supported by the information inthe chart? time (s)velocity (m/s
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Asmall 21 kilogram canoe is floating downriver at a speed of 1 m/s. what is the canoe's kinetic energy?
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8.29 two streams containing pyridine and acetic acid at 25°c are mixed and fed into a heat exchanger. due to the heat-of-mixing effect, it is desired to reduce the temperature after mixing to 25°c using a stream of chilled ethylene glycol as indicated in the diagram. calculate the mass flow rate of ethylene glycol needed. the heat capacity of ethylene glycol at these conditions is approximately 2.8 kj/(kg k), and the enthalpy change of mixing (δmixh) is given below.
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Refrigerant-134a flows through a carnot heat pump cycle at 0.5 kg/s. it is known that the maximum absolute temperature in the cycle is 1.1 times the minimum absolute temperature, and the net power input to the cycle is 2.5 kw. if the refrigerant changes from a saturated vapor to a saturated liquid during the heat rejection process, determine the maximum magnitude of the enthalpy of vaporization for this process in kj/kg (with 3 significant figures).
Answers: 3
How does an electric generator work?
A. The axle rotates the armature in the magnetic field of a pe...
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