Question

Question (a) Discuss the relative advantages and disndvantages of a liquid in glass thermomcter and a resistance thermometer which may be used in the same temperature range. l 4 Marksj 13 Marls) (b) ist ihree ieactions for a body cxperiencing /リperthermin. Brielly explain why a premature baby in an incubator can be dangerously cooled even when the air lemperature in the incubator is warm. (c) 14 Marks (d) During exercise, a person may give off 180 kcal of heat in 30 min by evaporation of water from the skin. How much water would be lost? 1 3 Marks e) During light activity, a 70-kg person may generate 250 kcal/h. Assuming that 20% oftli's goes into useful work and the other 80% is converted to heat, calculate the temperature rise of the body after 1.50 h if none of this heat transferred to the environment. l 6 Marks

Answer 1

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