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Solved: Using Mass Relations in a Neutralization
Chapter , Problem 1PE(choose chapter or problem)
The watt is the derived SI unit of power, the measure of energy per unit time: 1 W = 1 J/s. A semiconductor laser in a CD player has an output wavelength of 780 nm and a power level of 0.10 mW. How many photons strike the CD surface during the playing of a CD 69 minutes in length?
Questions & Answers
QUESTION:
The watt is the derived SI unit of power, the measure of energy per unit time: 1 W = 1 J/s. A semiconductor laser in a CD player has an output wavelength of 780 nm and a power level of 0.10 mW. How many photons strike the CD surface during the playing of a CD 69 minutes in length?
ANSWER:
Step 1 of 6
The energy can be calculated by the following equation.
Where E= energy ,
h= Planck’s constant,
c = speed of light,
