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adell [148]
2 years ago
10

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

Physics
2 answers:
Contact [7]2 years ago
7 0

Answer:

C

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

Ket [755]2 years ago
6 0

The correct Option is :

=》(C) The square of the distance that separates them

  • f  \:  \: \dfrac{1}{ \alpha }   \: \: r {}^{2}

where,

f = gravitational force

r = distance between the objects

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In a science fiction story, a microscopic black hole is given an enormous positive charge by firing an un-neutralized ion drive
Olegator [25]

Answer: distance d = 4.73e10m

Explanation: Suppose the charge on the black hole is 5740 C which is a positive charge.

Using electric potential V formula:

V = kq / d

Where K = 9.05×10^9Nm^2/C

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But you don't need to substitute it.

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Answer:

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3 years ago
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A certain quantity of a liquid has a volume of 10cm at 20°C. Calculate its volume at 50°C, if it’s cubic expansivity is 10^(-3)
Pavel [41]

Answer:

10.3 cm³

Explanation:

From the question given above, the following data were obtained:

Original volume (V₁) = 10 cm³

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Cubic expansivity (γ) = 10¯³ K¯¹

Final volume (V₂) =?

γ = V₂ – V₁ / V₁(θ₂ – θ₁)

10¯³ = V₂ – 10 / 10( 50 – 20)

10¯³ = V₂ – 10 / 10(30)

10¯³ = V₂ – 10 / 300

Cross multiply

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Collect like terms

0.3 + 10 = V₂

10.3 = V₂

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Thus, the volume at 50 °C is 10.3 cm³

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