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zepelin [54]
3 years ago
10

Which of the following is a supersonic speed? Mach 0.005 Mach 0.05 Mach 0.5 Mach 5

Physics
2 answers:
Viktor [21]3 years ago
7 0
Mach 5. Mach 1 is defined as the speed of sound. The number after “Mach” is the multiplier. So Mach 5 is 5x the speed of sound.
vichka [17]3 years ago
5 0

I just had this question, the correct answer is March 5

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A cylinder with a moving piston expands from an initial volume of 0.250 L against an external pressure of 2.00 atm. The expansio
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The final volume of the gas is 144.25 L

Explanation:

For an ideal gas kept at constant pressure, the work done by the gas on the surroundings is given by

W=p\Delta V = p(V_f - V_i)

where

p is the pressure of the gas

V_i is the initial volume

V_f is the final volume

For the gas in the cylinder in this problem,

p = 2.00 atm

V_i = 0.250 L

And we also know the work done,

W = 288 J

So we can solve the equation for V_f, the final volume:

V_f = V_i + \frac{W}{p}=0.250 + \frac{288}{2.00}=144.25 L

Learn more about ideal gases:

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7 0
3 years ago
How can having a mentor help individuals achieve their goals? A. Mentors can increase accountability. B. Mentors can increase mo
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Your best bet is to go with D.

6 0
3 years ago
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Is a iron a conduction , raidition or convection
Masja [62]

conduction sdnoajndsojnfojanskfnijoaknfibas

3 0
3 years ago
Two machines do thae same may have different power why
marissa [1.9K]

The quantity work has to do with a force causing a displacement. Work has nothing to do with the amount of time that this force acts to cause the displacement. Sometimes, the work is done very quickly and other times the work is done rather slowly. For example, a rock climber takes an abnormally long time to elevate her body up a few meters along the side of a cliff. On the other hand, a trail hiker (who selects the easier path up the mountain) might elevate her body a few meters in a short amount of time. The two people might do the same amount of work, yet the hiker does the work in considerably less time than the rock climber. The quantity that has to do with the rate at which a certain amount of work is done is known as the power. The hiker has a greater power rating than the rock climber.

Power is the rate at which work is done. It is the work/time ratio. Mathematically, it is computed using the following equation.


Power = Work / time


or


P = W / t

5 0
3 years ago
CN you help me with this question?
qaws [65]
25% i believe because if were talking 50 percent half it would be 25.


8 0
3 years ago
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