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2 years ago

Which statement about the sun's energy is correct?

Physics

1 answer:

Vera_Pavlovna [14]2 years ago

6 0

I believe it’s A. I know for sure it isn’t D.

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How much force is required to raise a 0.2 kg mass?

Firlakuza [10]

Answer:

1.96 N

Explanation:

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2 years ago

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Kamir and Alexis are studying the properties of water. They conducted a variety of experiments to determine its physical and che

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ITS D hope this helps

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3 years ago

Help needed Can a body be accelerating if it is moving in circle

belka [17]

Answer:

When a body is moving on a circle it is accelerating because centripetal acceleration is always acting on it towards the center.

Please see the attached picture...

From the above diagram,we can say the acceleration is always acting on the body when it moves in a circle.

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3 years ago

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The students in the diagram wanted to calculate the speed of sound. They

topjm [15]

Isolate the variable by dividing each side by factors that don't contain the variable.

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2 years ago

An iron bal of mass 20kg is rolling on a flat surface. On applying force, the velocity change from 17ms to 27m/s in 5s. Calculat

pentagon [3]

Answer:

40 N

Explanation:

We first need to calculate the acceleration of the tron ball.

Since acceleration, a = (v - u)/t where u = initial velocity of iron ball = 17m/s, v = final velocity of iron ball = 27m/s and t = time taken for the change in velocity = 5 s.

So, a = (v - u)/t

= (27 m/s - 17 m/s)/5 s

= 10 m/s ÷ 5 s

= 2 m/s²

We know force on iron ball, F = ma where m = mass of iron ball = 20 kg and a = acceleration = 2 m/s²

So, F = ma

= 20 kg × 2 m/s²

= 40 kgm/s²

= 40 N

So, the magnitude of the force on the iron ball is 40 N.

4 0

2 years ago