The wavelength of a radio wave from an FM station broadcasting at 93.9 megahertz on your radio dial is 0.313 meters
Indicate whether the statement is true or false
F
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Plane Mirrors: Two plane mirrors make an angle of 30° with each other. A light ray enters the system and is reflected once off of each mirror. Through what angle is the ray turned?
A. 60° B. 90° C. 120° D. 150°
An object of mass m is hung from a string and set swinging. The period of the oscillation is recorded as T. The object of mass m is removed and is replaced by an object of mass 2m. When this object is set swinging, the period of its motion is
1. 2T 2. T/2 3. ?2T 4. T
Which of the following not generally thought of as matter?
A) light B) trees C) air D) clouds E) rain
The two most abundant elements in the Sun are:
A) magnesium and carbon. B) hydrogen and helium. C) nitrogen and neon. D) iron and oxygen.