We know, W = m * g
1250 = m * 9.8
m = 1250 / 9.8
m = 127.55 KG
In short, Your Answer would be 127.55 Kg
Hope this helps!
Answer:
e= 0.440 mV(millivolt)
Explanation:
Given Magnetic field B= 0.50T


Δt= 1.6sec

⇒


e= 0.440 mV(millivolt)
Answer:
Temperature at the bottom will be 19.18°C
Explanation:
We have given height h = 807 m
Temperature at the top 
Specific heat of water c = 4200 
From energy conservation
Kinetic energy at the bottom = potential energy at the top
So 

So temperature at the bottom = 17.3+1.88 = 19.18°C