Three devices that use electromagnetic induction in their operation are __________, __________, and __________

Fill in the blank(s) with correct word


generators, transformers, dynamic microphones, regenerative brakes

Physics & Space Science

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When a spinning object changes its size, its rotation rate

A. remains the same. B. always decreases. C. always increases. D. increases or decreases, depending on whether it shrinks or expands.

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Ground-based observations can be made easily in the ________ part(s) of the spectrum.

A. ultraviolet and visible B. infrared C. radio and ultraviolet D. radio and visible

Physics & Space Science

Light strikes a diamond (n = 2.42) immersed in glycerin (n = 1.473) at an angle of 60° relative to the normal to the surface. What is the angle of refraction?

a. 20° b. 60° c. 32° d. 64° e. 15°

Physics & Space Science

If bulb C were unscrewed: _________

a. bulb A and bulb B would be equally bright. b. bulb A would be brighter than bulb B. c. bulb A would be dimmer than bulb B. d. bulb A would go out. e. bulb B would go out.

Physics & Space Science