Answer:
v = 9.936 m/s
Explanation:
given,
height of cliff = 40 m
speed of sound = 343 m/s
assuming that time to reach the sound to the player = 3 s
now,
time taken to fall of ball
t = 2.857 s
distance
d = v x t
d = v x 2.875
time traveled by the sound before reaching the player
distance traveled by the wave in this time'
r = 0.143 x 343
r= 49.05 m
now,
we know.
d² + h² = r²
d² + 40² = 49.05²
d =28.387 m
v x 2.875=28.387 m
v = 9.936 m/s
The tennis ball that is hit the hardest would have the most kinetic energy.
Answer:
To win some of the ore associated with them as they can become more economical to produce.
Explanation:
Sometimes gangues are reprocessed so as to win back some of the ore that are associated with them as they become more economical to produce if the price of the metal goes up.
Gangues are undesired minerals that occurs in association with the desired ore. They are usually treated as wastes in mining.
- Often times, gangues can become economical to mine.
- Some gangues are not totally wastes, they are just undesired materials associated with the ore.
- Under certain economic considerations, they might become economical and augment the ore being processed.
- The price of the metal determines if the ore in the gangue should be won.
Answer:
we cant do this you have to experiment for yourself we have no idea what this assignment is. We could answer it if it was an answer with a direct answer but this is something that you must do by yourself.
Explanation:
It transfers the electrical current from the point of contact on the lightning rod into the ground.
