All the following may be represented by vectors except
a. velocity.
b. acceleration.
c. speed.
d. displacement.
c
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The cosmic microwave background is the total of all the radio emissions from all the galaxies and quasars in the universe
Indicate whether the statement is true or false
Four different objects have spectra that peak in the wavelength regions listed below. Which peak wavelength region is associated with the coldest of the four objects?
A) x-rays B) visible light C) infrared D) ultraviolet
The letter p is defined as:
An air bubble underwater has the same pressure as that of the surrounding water. As the air bubble rises toward the surface (and its temperature remains constant), the volume of the air bubble
A) increases. B) decreases. C) remains constant. D) increases or decreases, depending on the rate it rises.