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3 years ago

14

Bettina spoke into a microphone during the school play to increase the sound of her voice so the audience could hear her speak.

The loudness of Bettina’s voice was changed by what type of energy?

2 answers:

grandymaker [24]3 years ago

7 0

The loudness was increased by the amplifier which converted electrical energy into sound energy.

Sati [7]3 years ago

5 0

C.) Electric Energy

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Answer:

$4.82ms^{-1}$

Explanation:

We are given that

Initial velocity, u=5.20m/s

$\theta=22^{\circ}$

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We know that

Horizontal component of velocity= $ucos\theta$

Using the formula

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The anwser choice is A

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4 years ago

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Young's experiment is performed with light of wavelength 502 nm from excited helium atoms. Fringes are measured carefully on a s

jok3333 [9.3K]

Answer:

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Explanation:

Given

Wavelength of the atoms, λ = 502 nm = 502*10^-9 m

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d = 1*10^-5 / 11.4*10^-3

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Answer:

The Correct Answer is Heat of Combustion

Explanation:

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