Given an array of words representing your dictionary, you test words to see if it can be made into another word in dictionary. T
his will be done by removing characters one at a time. Each word represents its own first element of its string chain, so start with a string chain length of 1. Each time you remove a character, increment your string chain by 1. In order to remove a character the resulting word must be in your original dictionary. Your goal is to determine the longest string chain available for a given dictionary. for example, given a dictionary [a, and, ab, bear] the word and could be reduced to an and the word an to a. The single character a can not be reduced to any further as the null string is not in the dictionary. This would be the longest string chain, having a length 3. The word bear can not be reduced at all.
1 answer:
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Answer:
The efficiency of this fuel cell is 80.69 percent.
Explanation:
From Physics we define the efficiency of the automotive fuel cell (), dimensionless, as:
(Eq. 1)
Where:
- Maximum power possible from hydrogen flow, measured in kilowatts.
- Output power of the automotive fuel cell, measured in kilowatts.
The maximum power possible from hydrogen flow is:
(Eq. 2)
Where:
- Volume flow rate, measured in cubic meters per second.
- Density of hydrogen, measured in kilograms per cubic meter.
- Heating value of hydrogen, measured in kilojoules per kilogram.
If we know that ,
,
and
, then the efficiency of this fuel cell is:
(Eq. 1)
(Eq. 2)
The efficiency of this fuel cell is 80.69 percent.