Light travels at speed c. Complete the following equation using only words: wave speed = _____________ × ________________
Fill in the blank(s) with correct word
wavelength, frequency
or
frequency, wavelength
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Sunburns are produced by
A) infrared light. B) visible light. C) ultraviolet light. D) all of the above E) none of the above
Velma and Mort pass each other, in rocket ships, at a relative velocity of half of lightspeed. Velma has an ice cream cone which will melt in 5 minutes if not refrigerated. She removes her cone from the refrigerator, and allows it to melt
According to Mort, how long does it take for Velma's cone to melt? A) more than 5 minutes B) less than 5 minutes C) 5 minutes D) It could be either more than 5 minutes, or 5 minutes, depending on which observer is at rest. E) It is impossible to answer this question, because such measurements of moving objects have no precise meaning.
Linear momentum has units of ______________
Fill in the blank(s) with correct word
The positively charged particle inside an atom is the
a. electron b. proton c. neutron d. nucleus e. none of the above