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jolli1 [7]
2 years ago
13

A net force of 15 N is applied to a cart with a mass of 2.1 kg. What is the acceleration of the cart?

Physics
1 answer:
Shkiper50 [21]2 years ago
5 0
Force = mass * acceleration
15 = 2.1 * a
a = 15/2.1 = 7.143 m/s^2
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A spring with a spring constant of 110n/m is stretched by 12 cm in the positive direction. How much force is applied to the spri
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The force applied on the spring to stretch it is 13.2 N.

Hooke's law is a law of elasticity discovered by the English scientist Robert Hooke in 1660 that states that the displacement or size of a deformation is directly proportional to the deforming force or load for relatively small deformations of an object. When the load is removed under these conditions, the object returns to its original shape and size.

According to Hooke's law, F = k*e

where F is the force on the spring

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and e is extension

F = (110)*(0.12)

F = 13.2 N

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A molecular cloud fragments as it collapses because Choose one: A. the interstellar wind is stronger in some places than others.
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The cause for a molecular cloud forming fragments when it collapses is indicated correctly by option D. density variations from place to place grow larger as the cloud collapses.

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Molecular clouds are cold, dense areas of space where stars form. The cloud collapses into a proto-star when the gravitational force pulling it in outweighs the internal pressure pushing it in.

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How much force is needed to keep the 750000 Newton Space Shuttle moving at a constant speed of 28000 km/h, in a straight line?
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The force needed to keep the space shuttle moving at constant speed is 0.

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  • <em>weight of the space shuttle, F = 750,000 N</em>
  • <em>constant speed of the space shuttle, v = 28,000 km/h</em>

The mass of the space shuttle is calculated as follows;

W = mg\\\\m = \frac{W}{g} \\\\m = \frac{750,000}{9.8} \\\\m = 76,530.61 \ kg

The force needed to keep the space shuttle moving at constant speed is calculated as follows;

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Thus, the force needed to keep the space shuttle moving at constant speed is 0.

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