How many quark colors are there?

a. 1 b. 3
c. 6 d. none of the above


b

Physics & Space Science

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In a 3d subshell, what are the possible values for the magnetic quantum number?

A. 3 B. 3, -3 C. 3, 2, 1, 0 D. 2, 1, 0, -1, -2 E. 2, -2

Physics & Space Science

A 400-W computer (including its monitor) is turned on for 8.0 hours per day. If electricity costs 10ยข per kWh, how much does it cost to run the computer annually for a 365-day year?

A) $120 B) $1200 C) $15 D) $150

Physics & Space Science

If a thermometer measures the temperature of two objects as being equal, you can conclude that the objects will be in thermal equilibrium if they are brought into thermal contact

Indicate whether the statement is true or false

Physics & Space Science

Hydrogen atoms can emit four spectral lines with visible colors from red to violet. These four visible lines emitted by hydrogen atoms are produced by electrons

A) that start in the n = 2 level. B) that end up in the n = 2 level. C) that end up in the n = 3 level. D) that end up in the ground state. E) that start in the ground state.

Physics & Space Science