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What is gross calorific value and useful heat value of coal?
what is the differnence between gross calorific value and useful heat value
What two things must an item have to have value?
Anything that many want but few have will have high value. Things that are difficult to make often have high value. But for something to have value it must have UTILITY.
List a thermometer scale?
Kelvin (value suffixed by K), Celsius / Centrigrade (value suffixed by °C), Fahrenheit (value suffixed by °F), Rankine (value suffixed by °R)
What is a theoretical value in science?
A value that cannot be physically measured. It's a value known only in theory. (such as the size of a graviton)
Why do you calculate percent error?
To determine the Percent value, you must have two variables: True value, the Recorded or Measured value, and it is represented by the following equation:(Recorded/Measured value - True value) / True value *100%e.g (20.000 - 21.571) / 21.751*100% = -7.223%
