The process whereby heat flows in the absence of any medium is referred to as
A) conduction.
B) convection.
C) radiation.
D) inversion.
E) evaporation.
C
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The pupil of the eye increases in size under which condition?
a. object viewed is well illuminated b. eye is focused on a nearby object c. object viewed is dimly illuminated d. eye is focused on a distant object
In glass, plastic strain is due to the _____________and reformation of atomic bonds.
Fill in the blank(s) with the appropriate word(s).
One observation that suggests that the Earth has a dense central core is that
A) the Earth has plate tectonics B) surface rocks have the same density as the overall density of the planet C) surface rocks have a lower density than overall density of the planet D) surface rocks have a higher density than the overall density of the planet
According to the photoelectric effect in order to release electrons from a solid, the light incident upon it must:
A) have a high intensity. B) have a low intensity. C) have a long wavelength. D) have a short wavelength. E) None of the above.