Physics, 05.02.2021 17:00 anitadefrances
A hair dryer's electric motor is supplied with 900 kJ of electrical energy but only has an
output of 700 kl of rotational energy.
a)
Explain why the input energy is not equal to the output energy of the electric motor.
Answers: 3
Physics, 22.06.2019 11:50
Amoving electron has kinetic energy k1. after a net amount of work w has been done on it, the electron is moving one-quarter as fast in the opposite direction. (a) find w in terms of k1. (b) does your answer depend on the final direction of the electron's motion?
Answers: 2
Physics, 22.06.2019 12:10
The average density of the planet uranus is 1.27 103 kg/m3. the ratio of the mass of neptune to that of uranus is 1.19. the ratio of the radius of neptune to that of uranus is 0.969. find the average density of neptune.
Answers: 1
Physics, 23.06.2019 01:00
Is the portion of the electromagnetic spectrum that has a frequency just above that of visible light.
Answers: 3
Physics, 23.06.2019 04:31
What caused magnetic fields? what happens if you keep breaking a magnet in two until you reach a single atom?
Answers: 1
A hair dryer's electric motor is supplied with 900 kJ of electrical energy but only has an
output o...
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