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Mrac [35]
3 years ago
7

Acceleration is defined as the change in velocity divided by

Physics
1 answer:
mihalych1998 [28]3 years ago
8 0

Answer:

change in time

Explanation:

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A long solenoid has 103 turns/cm and carries current i. An electron moves within the solenoid in a circle of radius 2.60 cm perp
Aneli [31]

Answer:

0.23348 A

Explanation:

B = Magnetic field

v = Velocity of electron = 1.38\times 10^7\ m/s

q = Charge of electron = 1.6\times 10^{-19}\ C

\mu_0 = Vacuum permeability = 4\pi \times 10^{-7}\ H/m

r = Radius of circle = 0.026 m

N = Number of turns = 103 turns/cm = 103\times 100\ turns/m

I = Current

The magnetic and centripetal force will be balanced

Bqv=m\frac{v^2}{r}\\\Rightarrow B=\frac{mv}{qr}

The magnetic field in solenoid is given by

B=N\mu_0 I\\\Rightarrow I=\frac{B}{N\mu_0}

From the first equation

I=\frac{\frac{mv}{qr}}{N\mu_0}\\\Rightarrow I=\frac{mv}{N\mu_0qr}\\\Rightarrow I=\frac{9.11\times 10^{-31}\times 1.38\times 10^7}{103\times 100\times 4\pi \times 10^{-7}\times 1.6\times 10^{-19}\times 0.026}\\\Rightarrow I=0.23348\ A

The current in the solenoid is 0.23348 A

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2 years ago
Every morning Mr. Jason travels to school 20 miles and it takes him to get there 30 minutes. How fast was he traveling?
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