What is the energy of a photon of red light that has a frequency of $4.48 \cdot 10^{14}$ $4.48 * 10^14$ Hz?

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Answer 1 · 2015-12-04T04:18:11

$2.97 \times 10^{- 19}$ $2.97xx10^-19$ $J$ $"J"$

Use the formula $E = h v$ $E=hv$ .

${(E="energy of photon"),(h="Planck constant"=6.626xx10^-34),(v="frequency of photon"):}$

We can plug in what we know:

$E=(6.626xx10^-34)(4.48xx10^14)$

Plug this into your calculator:

$E=2.97xx10^-19$ $"J"$

Where energy $E$ is measured in $"J"$ , or joules.

What is the energy of a photon of red light that has a frequency of 4.48 * 10^144.48⋅10144.48 * 10^14 Hz?