2 years ago

How can I rewrite the equation a - b = d using addition?

Physics

1 answer:

Flauer [41]2 years ago

5 0

Explanation:

A=b+d that is the way to rewrite the equation

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Frictional force increases with the increase in the _______________ of the surface.

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Answer:

Frictional force increases with the increase in the roughness of the surface.

Explanation:

You will see that the rougher the surface, the greater the wear and tear.

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3 years ago

Anyone going to be my friend

Artemon [7]

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I'd love to but we cant talk right now cause its 12:22 am here and I'm gonna sleep now lol.

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2 years ago

Plaskett's binary system consists of two stars that revolve in a circular orbit about a center of mass midway between them. This

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Answer:

$1.554\times 10^{32}\ \text{kg}$

Explanation:

M = Mass of each star

T = Time period = 15.5 days

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Radius of orbit is given by

$R=\dfrac{vT}{2\pi}$

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$\dfrac{Mv^2}{R}=\dfrac{GM^2}{(2R)^2}\\\Rightarrow M=\dfrac{4Rv^2}{G}\\\Rightarrow M=\dfrac{4\dfrac{vT}{2\pi}v^2}{G}\\\Rightarrow M=\dfrac{2v^3T}{\pi G}\\\Rightarrow M=\dfrac{2\times 230000^3\times 15.5\times 24\times 60\times 60}{\pi\times 6.674\times 10^{-11}}\\\Rightarrow M=1.554\times 10^{32}\ \text{kg}$

The mass of each star is $1.554\times 10^{32}\ \text{kg}$

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2 years ago

A 2-kg book falls off a shelf. It hits a student traveling 2 m/s. How much kinetic energy does the book have?

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3 years ago

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2 years ago