During winter, the average temperature in Calgary is -5C, with a relative humidity of 75%, while the average temperature in Amsterdam is 5C, with a relative humidity of 90%. The skin temperature of a person is 34.2C, and this is only dependent on the internal body processes, and thus not dependent on the outside temperature. Overall, the heat transfer from a human body can be described by the following equation: Q = hA(Tskin - Tair) In this equation Q is the total heat transferred per unit of time, A is the area of a person, h is the heat transfer coefficient and T are the respective temperatures. a) What is the unit of the heat transfer coefficient in the SI system? Show how you derived this from the equation without looking it up. b) The heat transfer coefficient is dependent on external factors such as the air velocity v, the humidity of the air RH (ranging from 0 to 1) and the temperature difference between the air and the body AT. If the following equation can be used to estimate the heat transfer coefficient, explain why you feel colder in Amsterdam than in Calgary during the winter, when there is a 0.1 m/s breeze. h = 186.7 RH0.6. v0.257 1.28