Which of the following types of electromagnetic radiation has the smallest frequency?
a. x-rays
b. visible light
c. radio
d. gamma-rays
e. infrared radiation
C
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Recall that a raisin cake is sometimes used to imagine how an expanding universe behaves. Suppose you are in a uniformly expanding raisin cake, sitting on Raisin A, looking at Raisin B, 2 cm away from you
Raisin B is moving away from you at 1 cm/sec. At the same time, you observe another Raisin C, which is moving away from you at 3 cm/sec. How far away is Raisin C from Raisin A? A) 6 cm B) 3 cm C) 2/3 cm D) 3/2 cm E) impossible to say
In the Miller-Urey experiment, the electric discharge was meant to simulate
A) meteorite impacts. B) radiation. C) volcanic heating. D) lightning. E) ultraviolet light.
A 120-V rms signal at 60.0 Hz is applied across a series combination of a 30.0-mH inductor and a resistor. If the rms value of the current in this circuit is 0.600 A, what is the resistance of the resistor?
A) 200 ? B) 143 ? C) 80.0 ? D) 30.0 ? E) 268 ?
Two charged particles 1 m apart exert a 1-N force on each other. If the magnitude of each charge is doubled, the force on each particle will be
A) 1 N. B) 2 N. C) 4 N. D) 8 N. E) none of the above