95%
1%
5%
compared to what. Percentage of coal used to make iron/steel, or percentage of coal shipped overseas, or percentage of coal used to make electricity, or....
92
The percentage of energy converted into useful work is called the EFFICIENCY.
efficiency(:
5
about 40%
22%
oil
90-100%
3million
Efficiency.
That is called the "efficiency".
The answer is efficiency.
42