Compared to its neutral atom, an ion has the same number of
A) protons and neutrons
B) protons but a different number of neutrons
C) protons but a different number of electrons
D) neutrons but a different number of protons
C
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For a mole of material, the increment of heat (dQ) added to the material divided by the change in temperature (dT) is the heat _____________.
Fill in the blank(s) with the appropriate word(s).
Energy transport by ____________________ is important when photons cannot readily travel through a gas
Fill in the blank(s) with correct word
To date, we've found few planets orbiting their stars at distances comparable to the distances of the jovian planets in our solar system. Why do astronomers think this is the case?
A) We have not yet been searching for planets at such distances for a long enough time. B) Planets at such distances are extremely rare. C) No known method can detect planets at such large distances. D) Planets at such distances are probably low in mass.
As compared to a cool star, a hotter star emits:
a) shorter wavelength, lower frequency, redder color b) shorter wavelength, higher frequency, redder color c) shorter wavelength, lower frequency, bluer color d) shorter wavelength, higher frequency, bluer color e) longer wavelength, higher frequency, bluer color