One joule is the same as one
A) kilowatt-hour.
B) newton-meter.
C) meter per second squared.
D) watt-meter.
E) newton-second.
B
Physics & Space Science
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A) M B) G C) O D) A E) Can't tell from information provided.
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Free-fall motion neglects ______________
Fill in the blank(s) with correct word
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The excited state of a certain atom is 3.2 eV ± 0.21 eV. (h = 6.626 × 10-34 J ? s, 1eV = 1.60 × 10-19 J)
(a) What is the average lifetime of this state, in femtoseconds? (b) If the excited energy were doubled (to 6.4 eV ± 0.21 eV), how would the lifetime be affected?
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