7. If 8 million kg of water flows over Niagara Falls each second, calculate the power available at the bottom of the falls.

The power will be "3.92×10⁹ Watts". A further explanation is given below.

Explanation:

The given values as per the question,

Rate,

= 8 million kg

Distance,

= 50 m

Gravity,

= 9.8 m/s²

As we know,

The power will be:

⇒

On putting the values, we get

⇒            

⇒            

force required to detach it is given by

charges are taken to be fundamental charge

now we have

so above is the minimum distance at which it will detach