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Gam radio signals can usually be heard behind a hill, but fm often cannot. that is, am signals bend more than fm. explain. (radio signals, as we shall see, are carried by electromagnetic waves whose wavelength for am is typically 200 to 600 m and for fm about 3 m.)

What is the order of the moon, earth, and sun in a lunar eclipse and a solar eclipse?

Aknife blade is a(n) a. lever b. screw c. wedge d. inclined plane