When a .22-caliber rifle is fired, the expanding gas from the burning gunpowder creates a pressure behind the bullet. this pressure causes the force that pushes the bullet through the barrel. the barrel has a length of 0.61 m and an opening whose radius is 2.8 x 10²³ m. a bullet (mass = 2.6 x 10²³ kg) has a speed of 370 m/s after passing through this barrel. ignore friction and determine the average pressure of the expanding gas.
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Ответ:
Explanation:
t = Time taken
u = Initial velocity
v = Final velocity
s = Displacement
a = Acceleration
m = Mass of bullet =![2.6\times 10^{23}\ kg](/tpl/images/0466/8685/ae54a.png)
r = Radius of barrel =![2.8\times 10^{23}\ m](/tpl/images/0466/8685/049ea.png)
Pressure is given by
The pressure of the expanding gas is![1.18454\times 10^{-19}\ Pa](/tpl/images/0466/8685/59a39.png)
Ответ:
kinetic energy is Movement energy
think of it like the Xbox Kinect