2 years ago

6) If I were to drop a ball out of my car while I was traveling at a velocity of 25 m/s, and it underwent a

Physics

2 answers:

Sidana [21]2 years ago

7 0

12.5 m/s it take to stop the rolling ball

andre [41]2 years ago

3 0

Answer: 12.5 s If it was another number it would not make any sense I hope this helps you!!!!! :D

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A solenoid has a radius Rs = 14.0 cm, length L = 3.50 m, and Ns = 6500 turns. The current in the solenoid decreases at the rate

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Answer:

E = 58.7 V/m

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As we know that flux linked with the coil is given as

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$\phi = N(\mu_o N i/L)(\pi R_s^2)$

now the induced EMF is rate of change in magnetic flux

$EMF = \frac{d\phi}{dt} = \mu_o N^2 \pi R_s^2 \frac{di}{dt}/L$

now for induced electric field in the coil is linked with the EMF as

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$E(2\pi r_c) = \mu_o N^2 \pi R_s^2 \frac{di}{dt}/L$

$E = \frac{\mu_o N^2 R_s^2 \frac{di}{dt}}{2 r_c L}$

$E = \frac{(4\pi \times 10^{-7})(6500^2)(0.14^2)(79)}{2(0.20)(3.50)}$

$E = 58.7 V/m$

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