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3 years ago

For accelerated motion (the velocity is constantly changing),

Physics

1 answer:

rusak2 [61]3 years ago

5 0

Answer:

Explanation:

it means there is a change in the velocity plz mark brainliest

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The manipulation of natural sounds via the medium of magnetic tape is called

alexandr1967 [171]

The manipulation of natural sounds via the medium of magnetic tape is called "Musique concrete".

Musique concrete refers to an experimental method of melodic composition utilizing recorded sounds as crude material. The strategy was created around 1948 by the French composer Pierre Schaeffer and his partners at the Studio d'Essai ("Experimental Studio") of the French radio framework. The major guideline of musique concrète lies in the collection of different regular sounds recorded on tape (or, initially, on plates) to deliver a montage of sound.

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3 years ago

You are trying to overhear a juicy conversation, but from your distance of 20.0 m , it sounds like only an average whisper of 30

12345 [234]

Answer:

r₂ = 0.2 m

Explanation:

given,

distance = 20 m

sound of average whisper = 30 dB

distance moved closer = ?

new frequency = 80 dB

using formula

$\beta = 10 log(\dfrac{I_1}{I_0})$

I₀ = 10⁻¹² W/m²

now,

$30 = 10 log(\dfrac{I_1}{10^{-12}})$

$\dfrac{I_1}{10^{-12}}= 10^3$

$I_1= 10^{-8}\ W/m^2$

to hear the whisper sound = 80 dB

$80 = 10 log(\dfrac{I_2}{10^{-12}})$

$\dfrac{I_2}{10^{-12}}= 10^8$

$I_2= 10^{-4}\ W/m^2$

we know intensity of sound is inversely proportional to square of distances

$\dfrac{I_1}{I_2}=\dfrac{r_2^2}{r_1^2}$

$\dfrac{10^{-8}}{10^{-4}}=\dfrac{r_2^2}{20^2}$

$10^{-4}=\dfrac{r_2^2}{20^2}$

r₂ = 0.2 m

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4 years ago

The amount of light that enters the pupil is controlled by the: retina. lens. inis.

nignag [31]

Answer: The amount of light that enters the pupil is controlled by the Iris

Explanation:

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3 years ago

The zinc plate is coated with mercury

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Amalgamating is the coating of zinc plate with mercury.

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3 years ago

What is the relationship between the type of energy sublevels present and the

ziro4ka [17]

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3 years ago