# How would you calculate the energy of a photon with a known frequency?

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For example, if the frequency is "8x10^13Hz"

For example, if the frequency is "8x10^13Hz"

The energy of the photon can be calculated using

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The energy of a photon with a known frequency can be calculated using the equation: E = hf, where E is the energy of the photon, h is Planck's constant (6.62607015 × 10^-34 joule seconds), and f is the frequency of the photon in hertz (Hz).

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When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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