When a hydrogen atom absorbs a photon that raises it to the n = 7 state, what is the greatest number of photons that can be emitted by that atom as it returns to the ground state?
a. 6
b. 7
c. 8
d. 14
e. The correct answer is not given.
a
Physics & Space Science
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Indicate whether the statement is true or false
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A person weighing 0.70 kN rides in an elevator that has an upward acceleration of 1.5 m/s2 . What is the magnitude of the force of the elevator floor on the person?
a. 0.11 kN b. 0.81 kN c. 0.70 kN d. 0.59 kN e. 0.64 kN
Physics & Space Science
Just as in hydraulic circuits there is water pressure, in electric circuits there is
A) current. B) voltage. C) resistance.
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Which is larger, a calorie or a joule?
a. calorie b. joule c. Neither—they are the same. d. They cannot be compared since they measure different physical quantities.
Physics & Space Science