The power exerted by the electrical forces on a fragment of fiber is 8.0× 10^-5 Watts
<h3>Power and Energy or Work done</h3>
Power is the rate of doing work.
Energy is the ability to do work.
Work done and energy are used interchangeably.
- Work done = Force × distance
In the example above, the energy possessed by the mass is kinetic energy.
Kinetic energy is the energy a body has by virtue of its motion.
- Kinetic energy, KE = 1/2 mv^2
Calculating kinetic energy of the body:
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
Calculating power exerted:
time taken = 10 ms = 0.01 s
Power = work done/ time
Power exerted = 8.0× 10^-7/0.01
Power exerted = 8.0× 10^-5 Watts
Therefore, the power exerted by the electrical forces on a fragment of fiber is 8.0× 10^-5 Watts
Learn more about about electrical energy and power at: brainly.com/question/60890
