Question

Assuming a mass of 0.04-g, what is the power exerted by the electrical forces on a fragment of fiber if the fragment has a velocity of 200 mm/s, 10 ms after ejection?

Answer 1

8.0× 10⁻⁵ Watts is the power exerted

What is Power, Energy and Work done?

Physics' three essential notions are work, energy, and power. When a force (push or pull) given to an item results in the displacement of the object, that force is said to have performed work. Energy is how we describe the ability to perform the task. Power is the amount of work completed in a given amount of time.

mass of the body = 0.04 g = 4.0 × 10^-5 kg

velocity of the body = 200mm/s = 0.2 m/s

Kinetic energy of the body = 1/2 × 4.0 × 10^-5 × 0.2^2

Kinetic energy of the body = 8.0× 10^-7

Thus, work done = 8.0× 10^-7 J

Power = work done/ time

Power exerted = 8.0× 10^-7/0.01

Power exerted = 8.0× 10^-5 Watts

to learn more about Work, Energy and Power - brainly.com/question/60890

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