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Ronch [10]
2 years ago
9

True or false: In order to create a sound wave, work must be done.

Physics
1 answer:
il63 [147K]2 years ago
4 0

True - Because a sound wave carries energy; to propagate energy, energy must be applied for the sound wave to carry energy.

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3. Source 2 demonstrates the division in Congress into two as outlined in which document
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the bill of right was the outlined document.

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A solid conducting sphere with radius R that carries positive charge Q is concentric with a very thin insulating shell of radius
Nostrana [21]

Explanation:

Gauss Law relates the distribution of electric charge to the resulting electric field.

Applying Gauss's Law,

                              EA = Q / ε₀

Where:

E is the magnitude of the electric field,

A is the cross-sectional area of the conducting sphere,

Q is the positive charge

ε₀ is the permittivity

We be considering cases for the specified regions.

<u>Case 1</u>: When r < R

The electric field is zero, since the enclosed charge is equal to zero

                                            E(r) = 0

<u>Case 2</u>: When R < r < 2R

The enclosed charge equals to Q, then the electric field equals;

                              E(4πr²) = Q / ε₀

                              E = Q / 4πε₀r²

                              E = KQ /r²

Constant K = 1 / 4πε₀ = 9.0 × 10⁹ Nm²/C²

<u>Case 3</u>: When r > 2R    

The enclosed charge equals to Q, then the electric field equals;

                               E(4πr²) = 2Q / ε₀

                               E = 2Q / 4πε₀r²

                               E = 2KQ /r²        

4 0
3 years ago
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