watts = work per second.
work is mgh = 3x10x50=1500
watts out = 1500
Watts used = 2000
eff=1500/2000=75%
Answer:
Explanation:
Given
Current in the conductor
maximum Force
If Poles Faces are 55.5 cm in diameter i.e. Length
Force experience by a current carrying conductor is given by
where
thus Strength of Magnetic Field is 0.263 T
Answer:
C. Constant
Explanation:
The total energy of the cannonball remains constant as it travels through the air.
Answer:
Explanation:
If the stone will reach the top position of flag pole at t = 0.5 s and t = 4.1 s
so here the total time of the motion above the top point of pole is given as
now we have
so this is the speed at the top of flag pole
now we have
now the height of flag pole is given as