Answer:

Explanation:
The first number is
.
The second number is
.
We must multiply these two numbers together.

In scientific notation: 
Therefore, this is the solution you are looking for.
1) The electric potential energy can be defined as the product of the electric potential and the associated charge:

where
q refers to the charge
V denotes the electric potential
In this scenario, the charge on the rod is

, and the potential energy is

, thus we may rearrange the earlier formula to find the electric potential at the tip:

2) Using this same formula, if the charge changes to

, the resulting electric potential will be: