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2 years ago

Pls help! True or False?

Physics

2 answers:

Katen [24]2 years ago

8 0

Answer:

FALSE

Explanation:

I'm not pretty sure abt it but hope that helps!

jasenka [17]2 years ago

7 0

Answer:

True

Explanation:

i hope it helps

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How many electrons point in <br>2 second in a wire carrying a current of 20mA ?

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Which method of separation would you use when working in the garden and trying to separate the dirt from the weeds?

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Which of the following quantities is inversely proportional to the gravitational pull between two objects?

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Answer:

Explanation:

Since gravitational force is inversely proportional to the square of the separation distance between the two interacting objects, more separation distance will result in weaker gravitational forces

I hope this helps a little bit

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2 years ago

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A 10 kg ball is held above a building with a height of 30 m. What is the

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Answer: 2940 J

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PE= mgh

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3 years ago

WOULUJUTUL RECIPECUIUS.

3241004551 [841]

The force between the two objects is 19.73 nN.

<u>Explanation: </u>

Any force acting between two objects tends to be directly proportional to the product of their masses and inversely proportional to the square of the distance between the two objects. And this kind of attraction force between two objects is termed as gravitational force.

So if we consider $M_{1}$ and $M_{2}$ as the masses of both objects and let d be the distance of separation of two objects. Then the force between the two objects can be determined as below:

$\text {Gravitational force}=\frac{G \times M_{1} \times M_{2}}{d^{2}}$

As gravitational constant $G=6.67 \times 10^{-11} \mathrm{m}^{3} \mathrm{kg}^{-1} \mathrm{s}^{-2}$ , $M_{1}$ = 20 kg and $M_{2}$ = 100 kg, while d = 2.6 m, then

$\text {Gravitational force}=\frac{6.67 \times 10^{-11} \times 20 \times 100}{(2.6)^{2}}=\frac{6.67 \times 20 \times 10^{-9}}{6.76}$

Thus, we get finally,

$\text {Gravitational force}=19.73 \times 10^{-9} \mathrm{N}$

As we know, nano denoted by letter 'n' equals to $10^{-9}$

So the force acting between two objects is 19.73 nN.

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3 years ago