True.
Centripetal force is the force that keeps an object moving around a centre, and the velocity of the object is always changing as it travels round the centre. The centripetal force hence causes centripetal acceleration.
Answer:
Explanation:
The detailed steps and appropriate integration and differentiation is as shown in the attached files.
au = −g − kv2
ad = −g + kv2
The new force between the charges when the distance become 2d will be F'=4F
<h3>What is electrostatic force?</h3>
When two charged particles are separated by the distance d then the force of attraction or repultion acts on the charged particle depending upon the nature of the charge whether it is positive or negative.
The formula for the electrostatic force is given by
Now if the value of d becomes 2d then the formula will become:
Hence the new force between the charges when the distance become 2d will be F'=4F
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Answer:
(a) 0.81 V
(b) 0.52 V
Explanation:
Number of turns, N = 150
Radius, r = 2.5 cm = 0.025 m
Magnetic field, B = 0.060 T
f = 440 rev/min = 440 / 60 = 7.33 rps
A.
The maximum emf is given by
e = N x B x A x 2 x π x f
e = 150 x 0.060 x 3.14 x 0.025 x 0.025 x 2 x 3.14 x 7.33
e = 0.81 V
B.
The back emf is given by
e' = 2e / π = 2 x 0.81 / 3.14 = 0.52 V
Answer:
Explanation:
Because the electric potential can be written in , then we can find:
in N/C
The electric field is a constant electric field (the electric field is same for every distances from the charge) and the electric field is also comes from the negative point charge.