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3 years ago

what is the energy of a single photon of ultraviolet light with a wavelength of 30.0 nm? 1 nm=10^-9 m

Physics

1 answer:

Arada [10]3 years ago

4 0

From the planks equation
E=hv
V= c/ wave length
V= 3×10^8/30×10^-9
=1×10^16
E= hv
6.63×10^-34×1×10^16
= 6.63×10^-18

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Vika [28.1K]

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(a). The initial speed of the arrow is 49.96 m/s.

(b). The angle is 39.90°.

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Dividing equation (II) and (I)

$\dfrac{u\sin\theta}{u\cos\theta}=\dfrac{32.06}{38.33}$

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$\theta=\tan^{-1}0.8364$

$\theta=39.90^{\circ}$

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