Niels Bohr reasoned that a discrete line spectrum must be the result of a(n) ______________ effect
Fill in the blank(s) with correct word
quantum
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Momentum is conserved during a completely inelastic collision
Indicate whether the statement is true or false
Doppler shifted hydrogen absorption lines are seen in the spectrum of a star. The hydrogen line at 656.28 nm is seen to be shifted to 656.08 nm
How fast is the star moving (Note: The speed of light is approximately 300,000 km/s, or 3 × 105 km/s.)? A) about 10,000 km/s B) about 1,000 km/s C) about 1,000,000 km/s D) about 100 km/s
The Murchison meteorite contained
A) RNA. B) living cells. C) bacteria. D) DNA. E) 12 amino acids.
A skater can spin faster by pulling her arms closer to her body or spin slower by spreading her arms out from her body. This is due to
A) the law of gravity. B) Newton's third law. C) conservation of momentum. D) conservation of angular momentum. E) conservation of energy.