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LuckyWell [14K]
4 years ago
9

Plzz help me with science

Physics
1 answer:
RoseWind [281]4 years ago
3 0
These are the answers, i am not sure for the first question ( sry) :
2) D
3) D
5)A
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A 900 N student runs up the stairs 3.5 m high in 12<br> seconds. How much POWER do they generate?
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4 0
3 years ago
The weight of a block on the inclined plane is 500 N and the angle of incline is 30 degrees. What is the magnitude of the force
yanalaym [24]

Answer:

250 N

433 N

Explanation:

N = Normal force by the surface of the inclined plane

W = Weight of the block = 500 N

f = static frictional force acting on the block

Parallel to incline, force equation is given as

f = W Sin30

f = (500) Sin30

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Perpendicular to incline force equation is given  

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3 years ago
How did harlow shapley conclude that the sun was not in the center of the milky way galaxy?
timurjin [86]

We learned that We are in the disk of the Galaxy, about 5/8 of the way from the center.

<h3>What is the work of Harlow Shapley?</h3>

Shapley, who was headquartered in Boulder, Colorado, used Cepheid variable stars to estimate the size of the Milky Way Galaxy and its position relative to the Sun. In 1953, he published his "liquid water belt" theory, today known as the concept of a livable zone.

There are many stars, grains of dust, and gas in the Milky Way. It is known as a spiral galaxy because, from the top or bottom, it would appear to be whirling like a pinwheel. About 25,000 light-years from the galaxy's nucleus, the Sun is situated on one of the spiral arms.

Approximately 5/8 of the way from the galaxy's nucleus, we are in the disc. William Herschel believed that the Sun and Earth were about in the middle of the vast cluster of stars known as the Milky Way.

To learn more about Harlow Shapley's original estimate go to - brainly.com/question/28145909

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A:the other options are examples of unethical behavior
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What is the rabbit's displacement from t = 0s to 3 s?<br> Answer with two significant digits.
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Answer: i think the answer is 20.0s

Explanation:

3 0
3 years ago
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