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ziro4ka [17]
3 years ago
14

D. What is the net force on the bowling ball rolling lane

Physics
1 answer:
3241004551 [841]3 years ago
3 0

Answer:

Friction

Explanation:

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What is required to make a resting object move or a moving object change speed or direction?
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Why do you think you need to stir the Kool Aid?
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Stirring the Kool aid enables the the kool-aid to dissolve in water by keeping all of the crystals off the bottom and in the water.

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4 0
4 years ago
A solenoid of 2100 turns, area 10 cm2, and length 30 cm carries a current of 4.0 A. (a) Calculate the magnetic energy stored in
nikitadnepr [17]

Answer:

E = 0.1472  J

Explanation:

Given that,

The number of turns in the solenoid, N = 2100

Area of the solenoid, A = 10 cm² = 0.001 m²

The length of the solenoid, l = 30 cm = 0.3 m

Current in the solenoid, I = 4 A

We need to find the magnetic energy stored in the solenoid. The expression for the stored energy is :

E=\dfrac{1}{2}LI^2

Where

L is self inductance of the solenoid,

L=\dfrac{\mu_oN^2A}{l}\\\\L=\dfrac{4\pi \times 10^{-7}\times 2100^2\times 0.001}{0.3}\\\\L=0.0184\ H

So,

E=\dfrac{1}{2}\times 0.0184\times 4^2\\\\E=0.1472\ J

So, 0.1472  J of energy is stored in the solenoid.

3 0
3 years ago
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