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Dovator [93]
3 years ago
5

Which speed is at the sound barrier?

Physics
2 answers:
morpeh [17]3 years ago
7 0

The speed at the sound barrier is 343 m/s

N76 [4]3 years ago
6 0

343 m/s.....................

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A research submarine can withstand an external pressure of 62 megapascals (million pascals) all the while maintaining a comforta
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Answer:

<em>The depth will be equal to</em> <em>6141.96 m</em>

<em></em>

Explanation:

pressure on the submarine P_{sea} = 62 MPa = 62 x 10^6 Pa

we also know that P_{sea} = ρgh

where

ρ is the density of sea water = 1029 kg/m^3

g is acceleration due to gravity = 9.81 m/s^2

h is the depth below the water that this pressure acts

substituting values, we have

P_{sea} = 1029 x 9.81 x h = 10094.49h

The gauge pressure within the submarine P_{g} = 101 kPa =  101000 Pa

this gauge pressure is balanced by the atmospheric pressure (proportional to 101325 Pa) that acts on the surface of the sea, so it cancels out.

Equating the pressure P_{sea}, we have

62 x 10^6 = 10094.49h

depth h = <em>6141.96 m</em>

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In what state of matter does oxygen exist at room temperature
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