- Determine the energy of a photon whose frequency is 6.72*10^17Hz. Answer in units of J.?

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What is meant by anisotropic? Could a black hole exist within the event horizon of a bigger black hole? I need news on the tremors/aftershocks/earthquake I am feeling in Maricopa county Arizona.? If 5sinθ = 3 determine the value of:
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2. Tan (squared)θ
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