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irina1246 [14]
3 years ago
9

You observe a distant galaxy. You find that a spectral line of hydrogen that is shifted from its normal location in the visible

part of the spectrum into the infrared part of the spectrum. What can you conclude?
Physics
1 answer:
dimulka [17.4K]3 years ago
6 0

Answer:

The galaxy is moving away from us

Explanation:

Galaxy refers to a system of millions or billions of stars accompanied by gas and dust such that they are held together as a result of gravitational attraction.

When we observe a distant galaxy, we find that a spectral line of hydrogen that is shifted from its normal location in the visible part of the spectrum into the infrared part of the spectrum.

It means that the galaxy is moving away from us.

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A stone is thrown horizontally from the top of a tower at the same instant a ball is droppedvertically. Which object is travelin
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The ball is travelling faster when the two objects hits the level ground below.

<h3>Time of motion of the objects</h3>

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2 years ago
A man attaches a divider to an outdoor faucet so that water flows through a single pipe of radius 9.25 mm into four pipes, each
irinina [24]

Answer:

1.24 m/s

Explanation:

Metric unit conversion:

9.25 mm = 0.00925 m

5 mm = 0.005 m

The volume rate that flow through the single pipe is

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This volume rate should be constant and divided into the 4 narrower pipes, each of them would have a volume rate of

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So the flow speed of each of the narrower pipe is:

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v_n = \frac{9.74\times10^{-5}}{\pi 0.005^2} = 1.24 m/s

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3 years ago
An oscillating block-spring system has a mechanical energy of 4.72 J, an amplitude of 11.2 cm, and a maximum speed of 4.24 m/s.
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