3 years ago

What led astronomers to believe in the existence of dark matter?

Physics

1 answer:

Tju [1.3M]3 years ago

3 0

It’s either C or D. let me know but I would do C!

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This problem has been solved!

lana66690 [7]

Answer:

Charge on each metal sphere will be $8\times 10^{8}C$

Explanation:

We have given number of electron added to metal sphere A $n=10^{12}electron$

As both the spheres are connected by rod so half -half electron will be distributed on both the spheres.

So electron on both the spheres $=\frac{10^{12}}{2}=5\times 10^{11}electron$

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2 years ago

Take a look at a bicycle with gears. Using what you have just learned, answer the following questions:

Harlamova29_29 [7]

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answer a: a large front gear with a small back gear

answer b: a small front gear with a large back gear

Explanation:

just simple gearing ratios

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2 years ago

Does air resistance affect the motion of a falling object differently when the mass is greater?

mixas84 [53]

NO.

Air resistance does not affect the motion of a falling object differently when the mass is greater because the mass of an object does not in any way affect the speed of falling due to gravity, and air resistance depends only on the speed of the object and its surface area.

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