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3 years ago

MULTIPLE CHOICE PLEASE HELP QUICK!!!!!!

Physics

2 answers:

Natasha_Volkova [10]3 years ago

6 0

Answer:

934 m/s and it is faster in hydrogen than in air

Explanation:

Speed of sound in gas is given by the formula

$v = \sqrt{\frac{\gamma RT}{M}}$

here we know for hydrogen

M = 2 g/mol

R = 8.31 J/mol k

$\gamma = 1.4$

T = 0 degree C = 273 K

now we will have

$v = \sqrt{\frac{(1.4)(8.31)(273)}{0.002}}$

$v_{hydrogen} = 1260.2 m/s$

Now for air we know that

M = 29 g/mol

R = 8.31 J/mol k

$\gamma = 1.4$

T = 30 degree C = 303 K

now we will have

$v = \sqrt{\frac{(1.4)(8.31)(303)}{0.029}}$

$v_{air} = 348.6 m/s$

so the difference in the speed is given as

$\Delta v = v_{hydrogen} - v_{air}$

$\Delta v = 1260.2 - 348.6 = 911.4 m/s$

so the closest answer is 934 m/s and it is faster in hydrogen than in air

vekshin13 years ago

5 0

i would choose a for 945 and a for faster

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