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sineoko [7]
2 years ago
7

A certain white dwarf star was once an average star like our Sun. But now it is in the last stage of its evolution and is the si

ze of our Moon but has the mass of our Sun.
Estimate gravity on the surface on this star.

I know the solution of this question it is as the picture shows but I only need to add *10^3 to the lower part of the division lower part to get the correct answer. But I don't know why I should add it can anyone explain?

Physics
1 answer:
solmaris [256]2 years ago
6 0

Answer:

4.384 * 10^13

Explanation:

Given the expression :

[(6.67 * 10^-11) * (1.99 * 10^30)] ÷ [(1.74*10^3)*(1.74*10^3)]

Applying the laws of indices

[(6.67 * 1.99) *10^(-11 + 30)] ÷ [(1.74 * 1.74) * 10^3+3]

13.2733 * 10^19 ÷ 3.0276 * 10^6

(13.2733 / 3.0276) * 10^(19 - 6)

4.3840996 * 10^13

= 4.384 * 10^13

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RoseWind [281]

Answer:

v = rw

Explanation:

When an object is rolling continuously without slipping, then every angle it rotates through, is equal to a distance the perimeter has rotated.

If the object completes 10 revolutions and takes a particular time, let's say t to complete it. The angular distance would then be 20 π rad, while its angular velocity will be 20 π/t

The circumference will somehow translate to the distance it covers, which is 20πr, this means that the speed is 20πr/t

So, like the question asked, the linear speed compared to angular speed is

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In essence, v = rw

3 0
3 years ago
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<h3>What are quarks?</h3>

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3 0
2 years ago
According to Newton's first law, an object in motion will stay in motion unless:
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8 0
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1. If an object on a horizontal frictionless surface is attached to a spring, displaced, and then released. It will oscillate. I
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