when the temperature of the air is 25 degrees Celsius the velocity of a sound wave traveling through the air is approximately

Answers

Answer 1

Answer:
Assuming an ideal gas, the speed of sound depends on temperature
only. Air is almost an ideal gas.

Assuming the temperature of 25°C in a "standard atmosphere", the
density of air is 1.1644 kg/m3, and the speed of sound is 346.13 m/s.

The velocity can't be specified, since the question gives no information
regarding the direction of the sound.

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Call me nuts, but I can't shake the feeling that there's some kind of a
picture or drawing that's part of this question. Unless I miss my guess,
you copied part of the question, and then decided to stop right there and
not let us see the picture. If my hunch plays out, then we NEED to see
the picture in order to answer the question, and since you haven't shared
it, there is no way to write an answer.

Which of the following is a true statement? A) It's easier to lift a heavy weight straight up than to slide it up a ramp. B) When you use a lot of effort, a load becomes lighter. C) When you use a minimum amount of effort, a load becomes heavier. D) When you increase the distance over which effort is expended, you don't have to work as hard.

Answers

Answer:

D) When you increase the distance over which effort is expended, you don't have to work as hard.

Explanation:

This statement reflects one of the principles of mechanical advantage. When you increase the distance over which effort is applied (in situations like using a lever or a simple machine), it allows you to achieve the same work with less force. It's the concept of trading off force for distance, which is a fundamental principle in physics and mechanics.

A stars mass determines ?

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A star mass determines Core temperture

A certain percentage of body fat is essential for the body to function effectively.

Answers

This statement is true - humans require a certain percentage of body fat to function effectively. As a result of childbearing, women's bodies require a higher level of body fat than men: roughly 10-13%, compared to 2-5%.

Answer:

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b. False

Answers

This statement is false. It was not Bernoulli's principle who stated that pressure on a liquid transmitted through the fluid undiminished and acts equally on all point, instead it was Pascal's principle. Bernoulli's principle states that for an inviscid flow of a nonconducting fluid, an increase in the speed of the fluid occurs simultaneously with a decrease in pressure.

The term "accuracy" best refers to which of the following?a. whether or not a measurement is correct
b. how "close together" a set of measurements is
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d. how close a measurement is to an accepted value for the measurement

Answers

Answer: d. how close a measurement is to an accepted value for the measurement

Explanation:

Accuracy can be define as the quality or state of some measurement being correct depending upon the measurement, specific conformations and calculations. It refers to the closeness of the measurement to a define specific or acceptable value. It is the degree of correctness of a particular value obtain after the measurement.

D: how close a measurement is to an accepted value for the measurement.

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