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alexgriva [62]
3 years ago
7

According to the Universal Law of Gravitation, if the separation between two planets is increased by a factor of 8, how many tim

es weaker will their mutual pull of gravity be?
Physics
1 answer:
madam [21]3 years ago
3 0

Answer:

weakens by 64 times  

Explanation:

According to universal law of gravitation the force between two bodies is inversely proportional to square of their distance between them that F is inversely proportional to r^2

So if we increase the the distance between two planets by 8 times then the the mutual attraction between will be decrease by 8^2 times  

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Amazon rectangular bar of low carbon steel A-36 is exposed to an axial strees of 150 MPa. What is the original length of the bar
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1.8m

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is dimensionally correct relation necessarily to be a correct physical relation? explain with example.​
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Answer: hope it helps you...❤❤❤❤

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No, not necessarily.

For instance, Newton’s 2nd law is  F=p˙ , or the sum of the applied forces on a body is equal to its time rate of change of its momentum. This is dimensionally correct, and a correct physical relation. It’s fine.

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It’s a counter-example to the claim that a dimensionally correct equation is necessarily a correct physical relation.

A simpler counter example is  1=2 . It is stating the equality of two dimensionless numbers. It is trivially dimensionally correct. But it is false.

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Which object has a net force of -68 N?
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5 or 6

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