The next morning you ignore your alarm clock until you realize you will not reach the bus unless you run as fast as you can to the bus station in 15min. Carrying your school books during the run results in a total energy use of 1200W. You start sweating, which is the way your body keeps you cool.
a. Assume a typical efficiency how much would your body temperature rise during the 15min if you had no way of getting rid of your excess thermal energy?
b. Assume that the only way that your body cools itself is evaporation of sweat. To keep your body temperature the same, how much water do you have to evaporate during the 15 min of running? How much water do you need to drink not to get dehydrated? The heat of vaporization of sweat from skin is slightly higher than the value for water. Use the value given in your textbook.
What type of formulas can I use and what steps do i need to take
1 answer
total energy use of 1200W. <<<?????
2 answers