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Anna [14]
3 years ago
10

Is a star's emission spectrum unique?

Physics
1 answer:
aliina [53]3 years ago
4 0
Yessssssssssssssssssssssss
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What is the deffination of "The spinning of Earth on its axis"
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It takes Earth about 24 hours to rotate once on its axis. The movement of one object around another object is called revolution. ... Earth's path as it revolves around the sun is called its orbit. Earth's orbit is a slightly elongated circle, or ellipse.

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In general, the ________ of a simple machine is the ratio of the distance over which the force is applied to the distance over w
KATRIN_1 [288]
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What is the name of the fine soil particles deposited by rivers?
Damm [24]

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3 years ago
Starting from rest, a 2.1x10^-4 kg flea springs straight upward. While the flea is pushing off from the ground, the ground exert
Rainbow [258]

Answer:

a) The flea's speed when it leaves the ground is v=1.88m/s

b) The flea move 18cm upward while it is pushing off

Explanation:

Hi

<u>Knwons</u>

Mass m=2.1\times 10^{-4} kg, Work W=3.7\times 10^{-4} J and Force F=0.41N

a) Here we are going to use W=\frac{1}{2} mv^{2}, so v=\sqrt{\frac{2W}{m} }= \sqrt{\frac{2(3.7\times 10^{-4} J)}{2.1\times 10^{-4} kg} }=1.88m/s

a) Here we are going to use W=mgh, so h=\frac{W}{mg}= \frac{3.7\times 10^{-4} J}{(2.1\times 10^{-4} kg)(9.8m/s^{2})} =0,1797m or 18cm approx.

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3 years ago
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ch4aika [34]

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3 years ago
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