Repeatedly tap the side of a drinking glass with a spoon as you fill the glass with water and the pitch of the sound

A) increases.
B) decreases.
C) remains relatively constant.


Answer: B

Physics & Space Science

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What will be an ideal response?

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Based on the results from Planck, the overall composition of the universe is

A) 100% ordinary (baryonic) matter. B) 15% ordinary (baryonic) matter, 85% nonbaryonic dark matter. C) 1% ordinary (baryonic) matter, 99% nonbaryonic dark matter. D) 4% ordinary (baryonic) matter, 23% nonbaryonic dark matter, 73% dark energy.

Physics & Space Science

Answer the following statement(s) true (T) or false (F)

1. Equation E18.4 is also solved by a function f (s), where s = t + x/c.
2. One can in principle create a purely electric traveling electromagnetic wave in empty space

Physics & Space Science

Which is correct?

A.) 24 different kinds of quarks. B.) 12 kinds of quarks and the corresponding 12 kinds of antiquarks. C.) 24 kinds of antileptons. D.) 6 kinds of quarks and the corresponding 6 antiquarks, and 6 kinds of leptons and their 6 corresponding antileptons. E.) 3 quarks and the corresponding 3 antiquarks, 3 leptons and the corresponding 3 antileptons, and 12 other antileptons.

Physics & Space Science