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kirill115 [55]
3 years ago
12

Which statements describe magnetic poles? Check all that apply.

Physics
2 answers:
tresset_1 [31]3 years ago
5 0

Answer:

b, c, e

Explanation:

lilavasa [31]3 years ago
4 0

Answer:

what are the answer choices

Explanation:

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Newly discovered planet has twice the mass and three times the radius of the earth. What is the free-fall acceleration at its su
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Answer:

g_n=\dfrac{2}{9}g

Explanation:

M = Mass of Earth

G = Gravitational constant

R = Radius of Earth

The acceleration due to gravity on Earth is

g=\dfrac{GM}{R^2}

On new planet

g_n=\dfrac{G2M}{(3R)^2}\\\Rightarrow g_n=\dfrac{2GM}{9R^2}

Dividing the two equations we get

\dfrac{g_n}{g}=\dfrac{\dfrac{2GM}{9R^2}}{\dfrac{GM}{R^2}}\\\Rightarrow \dfrac{g_n}{g}=\dfrac{2}{9}\\\Rightarrow g_n=\dfrac{2}{9}g

The acceleration due to gravity on the other planet is g_n=\dfrac{2}{9}g

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