Answer:
because of tungsten's high melting point
Explanation:
Answer:
Air flows from a high-pressure area to a low-pressure area.
Explanation:
Answer:
Change in mechanical energy,
Explanation:
It is given that,
Mass of the projectile, m = 12 kg
Speed of the projectile, v = 20 m/s
Maximum height, h = 18 m
Initially, the projectile have only kinetic energy. it is given by :
K = 2400 J
Finally, it have only potential energy. it is given by :
P = mgh
P =2116.8 J
The change in mechanical energy is given by :
So, the change in mechanical energy is 283.2 J. Hence, this is the required solution.
Speed = distance / time
S= 40 000m / 5400s
S= 7.41m/s