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## ilovebmth1234 one year ago A photon has a wavelength of 6.2 meters. Calculate the energy of the photon in joules. (Planck's constant is 6.626 × 10È³Ê joule seconds, the speed of light is 2.998 × 10§ m/s)

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1. ilovebmth1234

A. $3.564*10^{-43}$ B. $3.204*10^{-26}$ C.$41.08*10^{-34}$ D. $13.702*10^{-42}$

2. AlexanderPhantomhive

E = hc / λ E = ((6.626*10^-34)*(2.998*10^8)) / 6.2 E = 3.17*10^-26 J

3. AlexanderPhantomhive

gosh i really dont know im stumped.

4. ilovebmth1234

that's okay i couldn't figure it out either this equation thing confused me

5. ilovebmth1234

im gonna try your answer and if i get it wrong ill let you know:3

6. Abhisar

Energy = $$\Large\sf \frac{HC}{\lambda}$$

7. ilovebmth1234

wait scratch that most of your answer was right

8. Abhisar

What?

9. Abhisar

Plug in the values, Energy = $$\sf \Large \frac{6.626 \times 10^{-34} \times 3 \times 10^8}{6.2}$$

10. ilovebmth1234

i went for answer B witch was closer to @AlexanderPhantomhive's answer she got and i got it right so the answer is B. 3.204x10^-26

11. Abhisar

Yes, that's $$\huge \checkmark$$

12. ilovebmth1234

thank you! both of you for your help :3 i wish i could give both of you medals

13. Abhisar

You're most welcome c;

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