A(n) ______________ consists of many narrow parallel slits very close together

Fill in the blank(s) with correct word

diffraction grating

Physics & Space Science

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The ____________ planets have larger radii than the ____________ planets

Fill in the blank(s) with correct word

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Physics & Space Science

The main sequence is luminosity class V

Indicate whether the statement is true or false

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Physics & Space Science

Doug rubs a piece of fur on a hard rubber rod, giving the rod a negative charge. What happens?

a. Protons are removed from the rod. b. Electrons are added to the rod. c. The fur is also charged negatively. d. The fur is left neutral.

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Physics & Space Science

Which of the following statements about the atomic theory of matter is true?

Einstein helped prove the atomic theory by explaining x-ray production in 1905. The atomic theory of matter was universally accepted at the end of the nineteenth century. Proust put forth the law of definite masses, saying that a compound is made up of numbers of atoms so that the total of each element has equal mass. Dalton proposed that atoms of each element have characteristic properties. Atoms were originally thought of as particles, but the work of Dalton and Brown helped prove that atoms were waves.

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Physics & Space Science