How many kilocalories of heat does the operation of a 1285 W hair dryer produce each second?
To find the number of kilocalories of heat produced by a hair dryer, you need to convert the power consumed by the hair dryer (in watts) into kilocalories per second.
1 kilocalorie is equal to 4.184 kilojoules (kJ), and 1 kilojoule is equal to 1000 joules (J). Therefore, we can use the following conversion factors:
1 kilocalorie = 4.184 kilojoules
1 kilojoule = 1000 joules
First, let's convert the hair dryer's power from watts to joules per second (J/s):
1285 W × 1 J/s = 1285 J/s
Now, let's convert joules per second to kilocalories per second:
1285 J/s × (1 kilocalorie / 4184 J) = 0.307 kilocalories/s
So, the operation of a 1285 W hair dryer produces approximately 0.307 kilocalories of heat each second.