Question

find the velocity of a bullet fired in standard air if this Mach angle is 30 degree take y = 1.5​

Answer 1

Answer:

Given : Mach angle α=30˚

R = 287 J/kg k

K = 1.4

Temperature t = 15˚ c

= 15 + 273 = 288˚ k

Now, Velocity of sound = KRT−−−−−√

=1.4×287×288−−−−−−−−−−−−√

c = 340.17 m/s

Now, Mach angle,

Sin α=c/v

i.e. Sin 30˚=340.17V

∴ V = 680.34 m/s

∴ The velocity of a bullet fired in standard air is 680.34 m/s

Step-by-step explanation:

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