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olga nikolaevna [1]
3 years ago
11

What is the wavelength of a light of frequency 7.21?

Physics
1 answer:
erik [133]3 years ago
4 0
MEMORIZED E=h*v h=6.626x10-34J*s INFORMED v=7.21x1014S-1CALCULATE E=h*v  E=(6.626x10-34J*s)*(7.21x1014s-1) The "s" cancels out. s-1=1/s so you get s/s  so you are left with Solution 4.78 10-19 J OR .478 aJ  <span>Apex - 467 nm ^.^  hopefully thats the correct thing</span>
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noname [10]

Answer:

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Explanation:

(a)

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make u the subject of the equation,

u² = v²-2gs

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(b)

Using,

v = u+ gt

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Make t the subject of the equation,

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