Answer:
(a) Power= 207.97 kW
(b) Range= 5768.6 meter
Explanation:
Given,
Mass of bullet,
Kinetic energy imparted,
Length of rifle barrel,
(a)
Let the speed of bullet when it leaves the barrel is .
Kinetic energy,
Initial speed of bullet,
The average speed in the barrel,
Time taken by bullet to cross the barrel,
Power,
(b)
In projectile motion,
Maximum height,
Range,
given that,
then,
Ok so it would be late and the relative velocity would be 190 m/s because 200 m/s - 10 m/s is 190 m/s. Hope this helps.
If you slow the motion of water molecules down, they are more likely to become ice
Answer:
Explanation:
The gravitational force acting on the ball, F = 10 N (down) The air resistance acting on the ball, f = 1 N (up) We need to find the magnitude of net force acting on the ball. The net force is given by : F' = 9 N. So, the net force acting on the ball is 9 N in downward direction. Hence, this is the required solution
Answer:
D. Alaska is in the half of Earth that's illuminated longer by sunlight.
Explanation:
Alaska is closer to the north poll than Florida causing longer day during the summer because Alaska is facing the sun (roughly) 20 hours out of the day.