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Alex_Xolod [135]
4 years ago
9

If the approximate energy of a photon present in an X-ray is 8.0 × 10-15 joules, what's the frequency of the X-ray? Given: Planc

k's constant is 6.63 × 10-34 joule·seconds.
(A)1.2 × 1014 hertz
(B)1.2 × 1019 hertz
(C)8.2 × 1018 hertz
(D)8.3 × 1019 hertz
Physics
1 answer:
vekshin14 years ago
8 0
E=hf
E/h=f
8e-15/6.63e-34=1.2e19
B is correct
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Answer:

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Explanation:

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STatiana [176]

Answer:

<em>The magnetic field through the coil at first increases steadily up to its maximum value, and then decreases gradually to its minimum value.</em>

<em></em>

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a hammer drops from a height of 8 meters. calculate the speed with which it hits the ground. show work
ioda

Answer:

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