A burning match and a bonfire may have the same temperature, yet you would not s
ID: 1049813 • Letter: A
Question
A burning match and a bonfire may have the same temperature, yet you would not sit around a burning match on a fall evening to stay warm. Why not? Be sure to distinguish 'heat' from 'temperature' in your answer. 'Specific heat capacity' is an intensive quantity that is the amount of energy needed to raise a substance 1 degree Celsius per grant. Just 'heat capacity' is an extensive quantity that is the amount of energy needed to raise a substance 1 degree Celsius. What is the heat capacity of 100 grams of water in J and in cal? 1 caloric = 4.184 J How much energy, in cal and J, is needed to boil 500 mL of water starting from room temperature (25 degree C)? A 45-g aluminum spoon (specific heat 0.88 J/g degree C) at 24 degree C is placed in 180 mL (180 g) of coffee at 85 degree C and the temperature of the two become equal. What is the final temperature when the two become equal? Assume that coffee has the same specific heat a water. The first time a student solved this problem they got an answer of 88 degree C. Explain why this must be an incorrect answer.Explanation / Answer
A burning match and a bonfire may have same temperature, but a bonfire has a better ability to provide heat for a longer time due to its larger amount. Heat is a form of energy whereas temperature is just a indication of how much heat energy is there. heat energy can be used for practical purposes only when it is available in a measurable amount for a considerable amount of time. This is the reason, a matchstick is not a good source of heat energy.
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