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Watts means joules per second. The device uses 1190 joules of energy every second; most of that will be converted to heat. It is best to use SI units most of the time; in this case, joules rather than calories for energy. However, if you want to convert that, 1 calorie = 4.184 joules; thus, you can divide the number of joules by 4.184 to convert it to calories.

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โˆ™ 10y ago
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โˆ™ 1mo ago

A 1190 watt hair dryer produces 1190 joules of heat per second. To convert this to kilocalories, we divide by 4184 (the conversion factor): 1190 J/s รท 4184 J/kcal โ‰ˆ 0.284 kcal per second.

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Q: How many kilocaclories of heat does the operation of a 1190 watt hair dryer produces each second?
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