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Oksanka [162]
2 years ago
8

How does soil, trees, and air might result in a tradeoff

Physics
1 answer:
user100 [1]2 years ago
5 0
Hello can you retype this question so I can help you?
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10 Select the correct answer. What property of a wave remains unchanged when a wave enters a different medium? O A amplitude OB.
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a and b ik thats the awser becuse imjust did it

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At rest, hydrogen has a spectral line at 116 nm. if this line is observed at 107 nm for the star sirius, how fast is sirius movi
Citrus2011 [14]

2.3275862×10¹²km/s fast is sirius moving in km/s.

<h3>Briefing:</h3>

Hydrogen has a spectral line at = 116nm=116×10⁻⁹m

Line is observed at = 107 nm=107×10⁻⁹m

Now, from the Hubble's law

V=(\Delta \lambda / \lambda)×C

Where,

v is the velocity

Δλ = Change in wavelength = 116 - 107= 9nm=9×10⁻⁹m

λ = Actual wavelength=116nm=116×10⁻⁹m

C is the speed of the light=3×10⁸m/s

on substituting the respective values, we get

V=(9/116)×3×10⁸=23275862.069×10⁵m/s

V=2.3275862×10¹²km/s.

<h3>What is the wavelength?</h3>

A waveform signal's wavelength, which is the distance between two identical locations (adjacent crests) in the succeeding cycles, determines whether it is sent through space or via a wire. Typically, in wireless systems, this length is specified in meters (m), centimeters (cm), or millimeters (mm).

To know more about Wavelength visit:

brainly.com/question/13533093

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4 0
1 year ago
As important as it is to plan ahead,sometimes you
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B. Cant stop things from going wrong.

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To me it's the only reasonable answer...

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