An electrostatic precipitator uses an electric field to remove smoke from the air

Indicate whether the statement is true or false


T

Physics & Space Science

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The kilowatt-hour is a unit of

a. power. b. energy. c. voltage. d. current.

Physics & Space Science

Total Internal Reflection: A ray of light in glass strikes a water-glass interface at an angle of incidence equal to one-half the critical angle for that interface. The index of refraction for water is 1.33, and for the glass it is 1.43. What angle does the refracted ray in the water make with the normal?

A. 37° B. 42° C. 47° D. 32° E. 27°

Physics & Space Science

Two long, parallel wires carry currents of different magnitudes. If the current in one of the wires is doubled and the current in the other wire is halved, what happens to the magnitude of the force between these two wires?

A) It is doubled. B) It stays the same. C) It is tripled. D) It is quadrupled. E) It is reduced by a factor of 2.

Physics & Space Science

In the nucleus, the maximum number of neutrons in a neutron energy level is (are) ______ and the maximum number of protons in a proton energy level is (are) ______.

A. 1, 1 B. 1, 2 C. 2, 1 D. 2, 2 E. 2, 8

Physics & Space Science