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Katena32 [7]
3 years ago
5

Please help step by step 15 points

Physics
1 answer:
BartSMP [9]3 years ago
3 0

3.87 i think but if its not correct then let me know.



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A solenoid having N turns and carrying a current of 2.000 A has a length of 34 00 cm. If the magnitude of the magnetic field gen
umka21 [38]

Answer:

B) 1218

Explanation:

N = Total number of turns in the solenoid

L = length of the solenoid = 34.00 cm = 0.34 m

B = magnetic field at the center of the solenoid = 9 mT = 9 x 10⁻³ T

i = current carried by the solenoid = 2.000 A

Magnetic field at the center of the solenoid is given as

B = \frac{\mu _{o}N i}{L}

9\times 10^{-3} = \frac{(4\pi\times 10^{-7} )N (2)}{0.34}

N = 1218

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3 years ago
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which of the following are good conductors under normal conditions? A. Penny B.copper wire C. a dime D.plastic E.aluminum foil F
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Answer:

see explanation

Explanation:

A,B,C,E

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3 years ago
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When you move your muscles, chemical energy in the cells is converted into mechanical and thermal energy. What is this an exampl
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Answer:

B.Law of conservation of energy

Explanation:

In physics and chemistry, the law of conservation of energy states that the total energy of an isolated system remains constant; it is said to be conserved over time. This law means that energy can neither be created nor destroyed; rather, it can only be transformed or transferred from one form to another.

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At time t = 0 a 2230-kg rocket in outer space fires an engine that exerts an increasing force on it in the +x-direction. This fo
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Answer:

I=4090.8Ns

Explanation:

Since our equation is F=At^2 and F=781.25 N when t=1.49s, we have:

A=\frac{F}{t^2}=\frac{781.25N}{(1.49s)^2}=351.9N/s^2

The impulse of a force is I=\int\limits {F} \, dt, so for our case we have:

I=\int\limits^{t_f}_{t_i} {At^2} \, dt=A (\frac{t_f^3}{3}-\frac{t_i^3}{3})

For our case t_i=2s and t_f=2s+1.5s=3.5s, so we have:

I = (351.9N/s^2) (\frac{(3.5s)^3}{3}-\frac{(2s)^3}{3})=4090.8Kgm/s

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What is the angular displacement In radians of a wagon that moves 270 around a circle path
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Answer:

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