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otez555 [7]
3 years ago
10

You adjust the temperature so that a sound wave travels more quickly through the air. You increase the temperature from 30°C to

36°C. What's the velocity of the sound wave at this new temperature? A. 344.0 m/s B. 335.6 m/s C. 350.0 m/s D. 352.6 m/s
Physics
2 answers:
zhuklara [117]3 years ago
6 0

yep you were right the answer is D



earnstyle [38]3 years ago
5 0

The correct answer to the question is : D) 352.6 m/s.

CALCULATION :

As per the question, the temperature is increased from 30 degree celsius to 36 degree celsius.

We are asked to calculate the velocity of sound at 36 degree celsius.

Velocity of sound is dependent on temperature. More is the temperature, more is velocity of sound.

The velocity at this temperature is calculated as -

                            V = 331  + 0.6T m/s

                               = 331 + 0.6 × 36 m/s

                               = 331 + 21.6 m/s

                               = 352.6 m/s.

Here, T denotes the temperature of the surrounding.

Hence, velocity of the sound will be 352.6 m/s.

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mina [271]

Answer:

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3 years ago
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madreJ [45]

Hello!

<em>a) What is the change in momentum</em>?

The change of the momentum is the velocity, because the velocity is reduced to zero.

We can calculate the aceleration, applicating the formula:

\boxed{a=\frac{V-Vi}{t} }

Like you see, the final velocity will be zero, so:

a = \dfrac{0m/s-40m/s}{4s}

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Like you see, the aceleration applicate by superman is of <u>-10 m/s^2.</u>

If the aceleration is negattive, means the velocity will decrease.

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For calculate the force applicate for superman, lets applicate the second law of Newton:

\boxed{F=ma}

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Nesterboy [21]

Answer:

A) the ammeter is x  

B)

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  • voltage across the right one  = 0.3 V

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Explanation:

From the diagram attached below;

A) Assuming the homes were wired in series, and one of the homes face short circuit then all the houses would face power cut but it doesn't happen. So they must be connected in parallel.

Therefore; The ammeter is  connected in series, Hence, the ammeter is x  and the voltmeter must be z.

B)

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x = 0.15 A

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voltage across the right one = z = 0.3 V

C)

The total voltage of battery = 0.75+0.3 = 1.05 V

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JulijaS [17]
E = hf
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