Ihave a big test coming up and these two questions i don't understand: choose the best a device that transforms mechanical energy into electrical energy is a/an a. conductor b. electric generator c. circuit d. insulator choose the best the armature in an electric motor spins continuously because a. the current can only go in one direction b. the current reverses every half turn c. the current is weak d. the current gets stuck in the armature : )
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Physics, 21.06.2019 17:40
Which is not a source of noise pollution? a)airplanes b)acid rain c)machines d)cars
Answers: 2
Physics, 22.06.2019 13:50
The magnitude of the poynting vector of a planar electromagnetic wave has an average value of 0.939 w/m^2 . the wave is incident upon a rectangular area, 1.5 m by 2.0 m, at right angles. how much total electromagnetic energy falls on the area during 1.0 minute?
Answers: 2
Physics, 22.06.2019 14:30
Give one example to show that when substances are mixed,it may result in a chemical or a physical change depending on the conditions.
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Physics, 22.06.2019 18:30
Asmall 12.00g plastic ball is suspended by a string in a uniform, horizontal electric field with a magnitude of 10^3 n/c. if the ball is in equilibrium when the string makes a 30 ° angle with the vertical, what is the net charge on the ball?
Answers: 1
Ihave a big test coming up and these two questions i don't understand: choose the best a device t...
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