Answer: 1.6958*10^3 kW-hr
Explanation:
The barrel of oil contains around 6.1*10^9 J of energy.
We want this energy expressed in kW-hr.
We know that:
1J = 2.78*10^(-7) kW-hr
Then 6.1*10^9 J will be equal to 6.1*10^9 times the above amount.
This is:
E = (6.1*10^9)*(2.78*10^(-7) kW-hr) = (6.1*2.78)*(10^9*10^(-7)) kW-hr
= 16.958*10^(9 - 7) kW-hr
= 16.958*10^2 kW-hr
= 1.6958*10^3 kW-hr
Energy is the ability to do work. There are a few types of energy, these types are as follows:-
The barrel of oil contains around 6.1*10^9 J of energy. We want this energy expressed in kW-hr.
One joule of energy has 1J = 2.78*10^(-7) kW-hr .
Therefore, the [tex]6.1*10^9[/tex]J will be equal to [tex]6.1*10^9[/tex] times the above amount.
Hence, the energy will be
E = [tex](6.1*10^9)*(2.78*10^7 )[/tex]
=[tex]16.958*10^9-7[/tex]
= [tex]1.6958*10^3 kW-hr[/tex]
Hence, the correct option is [tex]1.6958*10^3 kW-hr[/tex]
For more information, refer to the link:-
https://brainly.com/question/24284560
