The proper abbreviation for ‘grams' is ‘g.'
Indicate whether the statement is true or false
T
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An object of zero radius is known as a __________________
Fill in the blank(s) with correct word
One phenomenon or experiment that supports the wave theory of matter is
A) the Michelson-Morley experiment. B) the tiny flashes that are observed when a light beam strikes a screen. C) interference effects with light. D) the tiny flashes that are observed when an electron beam strikes a screen. E) the double-slit experiment with electrons.
Neutrinos travel at very high speeds (close to the speed of light). How does this fact imply that neutrinos cannot make up the bulk of the dark matter in galaxies?
A) Their high speeds mean neutrinos cannot have much mass. B) Their high speeds tell us that neutrinos interact only through the weak force and gravity. C) Their speeds of neutrinos mean that neutrinos would escape from galaxies.
A rock sample from the moon includes a mineral that contains small amounts of the radioactive isotope Potassium-40 and its daughter element Argon-40 (half-life of 1.3 billion years). This mineral would not form with any Argon-40
Consider a crystal with 7 atoms of Argon-40 for every 1 atom of Potassium-40. How many atoms of Potassium-40 were present when the crystal formed for each atom of Potassium-40 that exists today? A) 1 B) 7 C) 8 D) None