3 years ago

Speed of sound in air is less than speed of sound in liquid true or false

Physics

1 answer:

Mrrafil [7]3 years ago

5 0

TRUE

Sound travels <u>faster </u>in liquids than in gases because molecules are more tightly packed.

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100/5 = 20

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One end of a metal rod is in contact with a thermal reservoir at 745. K, and the other end is in contact with a thermal reservoi

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Answer:

a) $S_1=-9.65}\ J/K$

b) $S_2=71.18\ J/K$

c) 0 J/K

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Given that

T₁ = 745 K

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Q= 7190 J

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$S_1=-\dfrac{7190}{745}\ J/K$

Negative sign because heat is leaving.

$S_1=-9.65}\ J/K$

The entropy change of reservoir 101 K

$S_2=\dfrac{7190}{101}\ J/K$

$S_2=71.18\ J/K$

The entropy change of the rod will be zero.

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4 years ago

Use the worked example above to help you solve this problem. If a car is traveling at a speed of 28.4 m/s, what is its speed in

dolphi86 [110]

Answer:

The correct answer is - 63.61 miles/hour.

Explanation:

Meter and miles both are the measuring units of distance and speed units are meter per second and miles per hour. The numerical relation between these two units are as follows:

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The car travels 28.4 m/s so in miles per hour it would be:

So, 28.4 meters per second = 28.4 * 2.24 miles per hour

28.4 meters per second = 63.61 miles per hour.

Thus, the correct answer is - 63.61 miles per hour.

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3 years ago

Speed of sound in air is less than speed of sound in liquid true or false​

Speed of sound in air is less than speed of sound in liquid true or false