the firing. (b) Neglecting air resistance, find the range of this projectile when it is fired
at an angle such that the range equals the maximum height attained.
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,
C: "The students pass the envelope from one student to the next until it travels across the room."
To quote ck12, "The particles of the medium just vibrate in place. As they vibrate, they pass the energy of the disturbance to the particles next to them, which pass the energy to the particles next to them, and so on."
If you are doing a USA TEST Prep:
D) 111.6 V