Answer:
Explanation:
Given:
dI/dt = 6.21 A/s
n = N/l
= 100 turns/cm
= 100 turns/cm × 100 cm/1 m
Radius, r = 14.7 cm
= 0.147 m
Inductance, L = uo × n^2 × A × l
L/l = 4pi × 10^-7 × (100 × 100)^2 × pi × 0.147^2
= 8.53 H
Emf, E = L × dI/dt
E/l = L/l × dI/dt
= 8.53 × 6.21
= 52.98 V/m
=
Answer:
Explanation:
Mass of a hockey puck, m = 0.17 kg
Force exerted by the hockey puck, F' = 35 N
The force of friction, f = 2.7 N
We need to find the acceleration of the hockey puck.
Net force, F=F'-f
F=35-2.7
F=32.3 N
Now, using second law of motion,
F = ma
a is the acceleration of the hockey puck
So, the acceleration of the hockey puck is .
The total mechanical energy of the skydiver is 178,000 J.
The given parameters;
- <em>Kinetic Energy of the skydiver, K.E = 100,000 Joule</em>
- <em>Gravitational Potential Energy of the skydiver, P.E = 78,000 Joules.</em>
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The total mechanical energy of the skydiver is the sum of the kinetic energy and the potential energy.
<em>Total mechanical energy = K.E + P.E</em>
Total mechanical energy = 100,000 J + 78,000 J
Total mechanical energy = 178,000 J
Thus, the total mechanical energy of the skydiver is 178,000 J.
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Answer:
Sound is produced when an object vibrates, creating a pressure wave. This pressure wave causes particles in the surrounding medium (air, water, or solid) to have vibrational motion. As the particles vibrate, they move nearby particles, transmitting the sound further through the medium.
Friction the force that oppose motion so it unhelpful where all the motion of an object is desired.that is what i know.