The library is approximately 9m across. What is the minimum possible energy for a photon in the library? Please show all

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answerhappygod
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The library is approximately 9m across. What is the minimum possible energy for a photon in the library? Please show all

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The library is approximately 9m across. What is the minimumpossible energy for a photon in the library?
Please show all the steps! This is a physics problem.
a. There is no min. energy
b. 4.417 x10^-26
c. 2.208 x10^-26
d. 1.104 x10^26
e. 5.521 x10^-27
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