What number represents the ratio of speed of an object to the speed of sound in the surrounding air?

What number represents the ratio of speed of an object to the speed of sound in the surrounding air?
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ANSWER: MACH NUMBER
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Description : Pick up the correct statement from the following:  (A) The water level in a still well, represents the ground water table level  (B) The difference between water table level and the water ... water table surrounding a well during pumping, forms a cone of depression  (D) All the above 

Last Answer : (D) All the above 

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Last Answer : Speed of sound in air under normal conditions - 332 m / s. .

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Description : What is the speed of sound in air ?

Last Answer : Speed of sound in air 350ms -1

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Description : What is the speed of sound in air ?

Last Answer : Speed of sound in air 330 m / s

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Last Answer : (2) Physical conditions Explanation: Wind can increase or decrease the speed, and can even push sound waves sideways. Air density affects it. Temperature, pressure, humidity and gas mixture can each affect the density.

Speed of sound in air is unaffected by change in : (1) Pressure (2) Humidity (3) Temperature (4) Volume

Description : Speed of sound in air is unaffected by change in : (1) Pressure (2) Humidity (3) Temperature (4) Volume

Last Answer : (1) Pressure Explanation: The speed of sound in air depends on the density of air and the density of air depends on the temperature. The speed of sound is unaffected by pressure. If the atmospheric pressure changes, the speed of sound in air remains constant.

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If density of oxygen is 16 times that of hydrogen, what will be their corresponding ratio of velocity of sound? (1) 4 : 1 (2) 2 : 1 (3) 1 : 16 (4) 1 : 4

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To a person standing on shore, an object dropped from the mast of a passing sailboat will trace what path, assuming negligible air resistance. Is it: w) vertical straight line x) slanted straight line y) parabola z) hyperbola

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Last Answer : The speed of sound in diamonds is 12,000 m / s