He preformed the first ever successful open heart surgery
Answer:
The voltage of the battery
Instead of asking this question go and study
Answer:

Explanation:
Power is defined as the energy produced (E) per unit of time (t):

This means that the energy produced in the Sun each second (1 s), given the power
, is

Each p-p chain reaction produces an amount of energy of

in order to get the total number of p-p chain reactions per second, we need to divide the total energy produced per second by the energy produced by each reaction:

Alright well the Answer to your question is A). Screw
Hope this helps have a nice day : )
If u want i can explain why