Which of the following is true of atoms in the Universe?

A) Most of the iron in your body was produced by nuclear fission reactions.
B) Most of the calcium atoms in your bones were not assembled inside stars.
C) The iodine atoms were not formed during the violent deaths of rare massive stars.
D) The gold and silver atoms were created in a few moments during supernova explosions.


D

Physics & Space Science

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Why is it easier to locate meteorites in Antarctica than anywhere else on Earth? a. Antarctica is an easy location for humans to access

b. More scientists are in the area to find meteorites. c. When meteorites land, they melt a small crater on the ice. d. Meteorites are easy to detect on top of the ice where there are no Earth rocks. e. Meteorites fall most often through the ozone hole above the South Pole.

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If water had a lower specific heat capacity, would ponds and lakes be more or less likely to freeze in winter?

What will be an ideal response?

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Three resistors with values R1, R2 and R3, respectively, are connected in parallel. Which of the following expresses the total resistance, RT, of the three resistors when connected in parallel?

a. RT = R1 + R2 + R3 b. RT = (1/R1 + 1/R2 + 1/R3) c. RT = R1 = R2 = R3 d. RT = (1/R1 + 1/R2 + 1/R3)?1

Physics & Space Science

If aluminum arsenate is AlAsO4, the ionic charge on the arsenate ion must be ______________

Fill in the blank(s) with correct word

Physics & Space Science