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Readme [11.4K]
3 years ago
10

How does size influence the appearance of a star? Give an example in your response.

Physics
1 answer:
vlabodo [156]3 years ago
5 0
The size of the star defines wither of not it is a dwarf star, or a red giant.
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How much force is needed to accelerate a 1.5 kg physics book to an acceleration of 6<br> m/s^2?
aleksley [76]

Answer:

Force = 8.0 k g m / s

Explanation:

Force = mass x acceleration

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3 0
3 years ago
An electric motor does 900j of work for 8 hours. Calculate the power used​
nataly862011 [7]

Answer:

0.031 W

Explanation:

The power used is equal to the rate of work done:

P=\frac{W}{t}

where

P is the power

W is the work done

t is the time taken to do the work W

In this problem, we have:

W = 900 J is the work done by the motor

t = 8 h is the time taken

We have to convert the time into SI units; keeping in mind that

1 hour = 3600 s

We have

t=8\cdot 3600 =28,800 s

And therefore, the power used is

W=\frac{900}{28800}=0.031 W

6 0
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umka2103 [35]

Answer:

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Explanation:

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Which one of the following accurately describes the force of gravity?
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