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2 years ago

2) A 0.4kg ball moves in horizontal circle of radius 3 m at speed of 100m/s. What

Physics

1 answer:

sweet-ann [11.9K]2 years ago

6 0

Answer:

F = 1300 N

Explanation:

F = mv²/R = 0.4(100²)/3 = 1333.3333...

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Answer:

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3 years ago

How long does it take for changed in an ecosystem to be reversed

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3 years ago

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

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

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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2 years ago

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laila [671]

Answer:

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3 years ago

Which best describes the ages of the rocks on opposite sides of and the same distance from, A Seafloor spreading center?

Genrish500 [490]

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-The rocks are the same age

Explanation;

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2 years ago