Pulmonary Arteries: Blood vessels that carry deoxygenated blood from the heart to the lungs. Superior Vena Cava: A large vein that delivers deoxygenated blood from the upper body into the heart. Hope this helps

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4 years ago

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In a ruby laser, an electron jumps from a higher energy level to a lower one. if the energy difference between the two levels is

Vaselesa [24]

The wavelength of the emitted photon is( $\lambda$ )= 690nm

<h3>How can we calculate the wavelength of the emitted photon?</h3>

To calculate the wavelength of the photon we are using the formula,

$\triangle E= \frac{h\times c}{\lambda}$

Or, $\lambda= \frac{h\times c}{\triangle E}$

We are given here,

$\triangle E$ = The energy difference between the two levels = 1. 8 ev= $1.8\times 1.6 \times 10^{-19}$ C.

h= Planck constant = $6.626\times 10^{-34}$ Js.

c= speed of light = $3\times10^8$ m/s.

We have to find the wavelength of the emitted photon = $\lambda$ m.

Therefore, we substitute the known parameters in the above equation, we can find that,

$\lambda= \frac{h\times c}{\triangle E}$

Or, $\lambda= \frac{6.626\times 10^{-34}\times 3\times 10^8}{1.8\times 1.6 \times 10^{-19}}$

Or, $\lambda= 690\times 10^{-9}$ m

Or, $\lambda$ =690 nm.

From the above calculation we can conclude that the wavelength of the emitted photon is 690nm.

Learn more about ruby laser:

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2 years ago

Distance and ___ are really the same quantity. A. length b. direction c. speed d. displacement

Oksi-84 [34.3K]

Answer:

distance and length are the same quantity

4 0

3 years ago