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inysia [295]
3 years ago
8

HELP!!!

Physics
2 answers:
nekit [7.7K]3 years ago
6 0
The answer is D. The Moon's gravitational pull
sergejj [24]3 years ago
3 0
D. The Moon's gravitational pull. This is because the moon's gravity pulls the water towards where it is in relation to earth causing high and low tides.
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An exoplanet with one half of Earth's mass and 50% of Earth's radius is discovered.
Georgia [21]

Answer:

The space cadet that weighs 800 N on Earth will weigh 1,600 N on the exoplanet

Explanation:

The given parameters are;

The mass of the exoplanet = 1/2×The mass of the Earth, M = 1/2 × M

The radius of the exoplanet = 50% of the radius of the Earth = 1/2 × The Earth's radius, R = 50/100 × R = 1/2 × R

The weight of the cadet on Earth = 800 N

The \ weight, W  =G\dfrac{M \times m}{R^{2}} = 800 \ N

Therefore, for the weight of the cadet on the exoplanet, W₁, we have;

W_1   =G\dfrac{\dfrac{M}{2}  \times m}{ \left ( \dfrac{R}{2} \right ) ^{2}} = G\dfrac{\dfrac{M}{2}  \times m \times 4}{ R ^{2}} = 2 \times G \times  \dfrac{M \times m}{R^{2}} = 2 \times 800 \, N = 1,600 \, N

The weight of a space cadet on the exoplanet, that weighs 800 N on Earth = 1,600 N.

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3 years ago
Which feature of electromagnets makes them more useful than permanent
mezya [45]
I think it’s D................
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You use 35 J of energy to move an object 5 m. What is the weight of the object
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Explanation:

35 ÷ 5 = 7kg.

=======================

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The answer is hydrogen
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Explain why some of the tree get detached from a tree if we vigorously shake it's Branch.​
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Answer:

When a tree is vigorously shaken, the branches of the tree come in motion but the leaves tend to continue in their state of rest due to inertia of rest. As a result of this, leaves get separated from the branches of the tree and hence fall down.

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3 years ago
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