Suppose you are trying to choose between two winter jackets. Suppose also that you have a heat-producing mannequin available for your use and you are able to adjust the mannequin’s rate of heat production. According to the equation: M = (1/I)(TB-TA) described in chapter 10, insulation is equal to (TB – TA)/M (this is in fact a general equation for insulation). How would you make a quantitative comparison of the insulation provided by the two jackets?

Suppose you are trying to choose between two winter jackets. Suppose also that you have a heat-producing mannequin available for your use and you are able to adjust the mannequin’s rate of heat production. According to the equation: M = (1/I)(TB-TA) described in chapter 10, insulation is equal to (TB – TA)/M (this is in fact a general equation for insulation). How would you make a quantitative comparison of the insulation provided by the two jackets?