The nebular theory predicts that the young Sun should have been rotating quite rapidly, but the Sun rotates slowly today. Can this fact be explained by the nebular theory?
A) Yes; the young Sun's solar wind would have carried away angular momentum, slowing the Sun's rotation.
B) Yes, objects always slow their rotations over time.
C) No, it is a complete mystery as to why the Sun would rotate slowly today.
A) Yes; the young Sun's solar wind would have carried away angular momentum, slowing the Sun's rotation.
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Indicate whether the statement is true or false
Quantum mechanics tells us that the probability of finding the electron in hydrogen at a distance between r and r + ?r in the ground state is greatest at a distance _____ a0 , where a0 is the Bohr radius.
A. 0.707 B. 1.00 C. 1.41 D. 2.00 E. 3.001/2
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What will be an ideal response?
Dimensional Analysis: When adding several quantities
A. the quantities can have any combination of units.
B. the quantities must all have exactly the same units.
C. the quantities must all be dimensionless.