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nikitadnepr [17]
3 years ago
7

Which of the three objects is the largest? Explain your answer.

Physics
1 answer:
Marizza181 [45]3 years ago
6 0

Answer:

isn't it the first one

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Why the change of the pressure and temperature affect the velocity of the sound ​
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<u>Air pressure has no effect at all in an ideal gas approximation. This is because pressure and density both contribute to sound velocity equally, and in an ideal gas the two effects cancel out, leaving only the effect of temperature. Sound usually travels more slowly with greater altitude, due to reduced temperature.</u>

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3 years ago
Explanation A 5000 kg rocket is at rest in deep space. The rocket burns fuel pushing 10kg of exhaust gases rearward at 4000 m/s.
katovenus [111]

Answer:

F = 4000 N

Explanation:

given,

mass of rocket (M)= 5000 Kg

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time = 10 s

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speed of rocket = 8 m/s

now,

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F = \dfrac{5000(8-0)}{10}

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4 0
3 years ago
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If the weight of 1kg is 10 N in water what is the density of the stone<br>​
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What is the formula for calculating the efficiency of a heat engine?
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Answer:

Efficiency = StartFraction T Subscript h Baseline minus T Subscript C Baseline over T Subscript h Baseline EndFraction times 100. Efficiency equals T Subscript c Baseline minus T Subscript h Baseline over T Subscript h Baseline all times 100.

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