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GuDViN [60]
3 years ago
12

You move a box 5 meters and perform 900 joules of work. How much force did you apply to the box?

Physics
1 answer:
valkas [14]3 years ago
7 0

Answer:

180 N

Explanation:

Work = force × distance

900 J = F × (5 m)

F = 180 N

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Answer:

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Explanation:

He will not succeed as it blows the trumpet harder that only increase the amplitude of the sound wave that means the intensity of the sound will increase but the frequency remains the same.

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An ideal solenoid having a coil density of 5000 turns per meter is 10 cm long and carries a current of 4.0
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The rule that is used to get the strength of magnetic field at the center of solenoid (B) is:
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4 years ago
A solid conducting sphere with radius R carries a positive total charge Q. The sphere is surrounded by an insulating shell with
Illusion [34]

Answer:

Explanation:

Volume of the insulating shell is,

V_{shell}=\frac{4}{3}\pi(R^3_2-R^3_1)

Charge density of the shell is,

\rho=\frac{Q_{shell}}{\frac{4}{3}\pi(R^3_2-R^3_1)}

Here, R_2 =2R, R_1 =R \,and\, Q_{shell} =-Q

\rho=\frac{Q_{shell}}{\frac{4}{3}\pi((2R)^3-R^3)}=\frac{-3Q}{28\piR^3}

B)

The electric field is E=\frac{1}{4\pi\epsilon_0}\frac{Qr}{R^3}

For 0 <r<R the electric field is zero, because the electric field inside the conductor is zero.

C)

For R <r <2R According to gauss law

E(4\pi r^2)=\frac{Q}{\epsilon_0}+\frac{4\pi\rho}{3\epsilon_0}(r^3-R^3)

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D)

The net charge enclosed for each r in this range is positive and the electric field is outward

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Charge enclosed is zero, so electric field is zero

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3 years ago
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Answer:

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