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Problem 3 Easy Difficulty

Find the energy of (a) a photon having a frequency of $5.00 \times 10^{17} \mathrm{Hz}$ and (b) a photon having a wavelength of $3.00 \times 10^{2} \mathrm{nm}$ . Express your answers in units of electron volts, noting that $1 \mathrm{eV}=1.60 \times 10^{-19} \mathrm{J} .$

Answer

a. $2070 \mathrm{cV}$
b. 4.14 e V

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Top Physics 103 Educators
Elyse G.

Cornell University

Andy C.

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Liev B.

Numerade Educator

Jared E.

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Video Transcript

But if the given problem, the energy off for four tone for two is given by using called to edge. If edges upon constant efforts to frequency for the given frequency, energy will be flung. Constant times 6.6 3000 are minus 34 times five times Duncan Power of 17. Uh, this gives us energy off 3.32 times 10 to power minus 16 on working a jolt into a strong Walt. This gives us 2070 electron world, but to be we can find a frequency frequency is given by speed off light. Right? Bye, Linda. Speed off light is three times the power a divided by 300 constant minus nine. Excuse us. The frequency off. One constant power. 15 hearts. From here, we can find energy energy simply one constant times frequency frequency you just found. Plan constantly. Have 6463 times 10 to power. Minus 34 times one concert, one time. Still power 15 hurts. This gives us energy off 6.63 times. Don't power minus 19 dividing it by 1.6. We cut this energy India Electron Walter, which is a full 0.1 for electron. Walt

Wesleyan University
Top Physics 103 Educators
Elyse G.

Cornell University

Andy C.

University of Michigan - Ann Arbor

LB
Liev B.

Numerade Educator

Jared E.

University of Winnipeg