Question

a machine gun having a power 27 kilowatt fires n bullets per second each of mass 10 gram if the velocity of each Bullet is 300 metre per second the value of n is​

Answer 1

Answer:

A machine gun fires 360 bullets per minute each bullet moves with a velocity of 600m S

Explanation:

velocity being 600m/s=> k.e. of each bullet=(1/2)(0.001m)×600²=360m J. 360 bullets per minute= 360/60=6 bullets/s.So the power ofgun to fire =360m×6 watt=2160m watt=2.16m kw.As per the question 2.16m=5.4=>m=5.4/2.16 =9/3.6=10/4=2.5 .