(1). The total surface of the alveoli of the adult human lung is about 80 m....

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(1). The total surface of the alveoli of the adult human lung is about 80 m. If this expands by 10% on inhalation, how much work (energy) must be done to increase the area of the film lining the lungs if the surface tension of the liquid in the film is 1 x 10^-3 J/m^2? W= (2). A taxidermist has to mount two similarly shaped fish, of a mass of 8 kg and 27 kg. The shorter fish is 48 cm long. Roughly how long is the longer fish? (write your answer in cm) (3). Assuming that pizza thickness does not change with the size ordered, do you get more pizza when you order two "medium" 10-inch pizzas or one "large" 15-inch pizza? (a) Which order gives you more pizza? A. Two medium pizzas B. One large pizza (b) How much more or less tood are two medium pizzas compared to one large pizza? Express your answer as a real number or a fraction. Two medium pizzas = one large pizza's worth of food. (4). A 75 kg man and a 2.5 kg hairless dog go swimming. When they emerge, a 0.33 kg film of water adheres to the man's skin. Assume that the bodies are isometric for the following questions. (a) How much water adheres to the dog's skin? ANSWER = kg (b) What percentage of the mass of each is the water film? Water film as percentage of man's mass= Water film as percentage of dog's mass = (5). T (N/m) (A) (B) (C) (D) r (cm) The graph above shows the variation of the tension (T) with radius (r) in the walls of different arterties. Which artery is most likely to develop an aneurysm? A. (A) B. (B) C. (C) D. (D) (6). The image above is a model of C60 fullrene (a carbon allotrope). A C60 'buckyball' is a quasi-spherical allotrope of carbon, made up of 60 covalently-bonded carbon atoms. If a typical buckyball has a diameter of 1 nm, approximately what would be the expected diameter of a C120 fullrene (i.e. a buckyball made up of 120 carbons)? ANSWER = nm (1). The total surface of the alveoli of the adult human lung is about 80 m. If this expands by 10% on inhalation, how much work (energy) must be done to increase the area of the film lining the lungs if the surface tension of the liquid in the film is 1 x 10^-3 J/m^2? W= (2). A taxidermist has to mount two similarly shaped fish, of a mass of 8 kg and 27 kg. The shorter fish is 48 cm long. Roughly how long is the longer fish? (write your answer in cm) (3). Assuming that pizza thickness does not change with the size ordered, do you get more pizza when you order two "medium" 10-inch pizzas or one "large" 15-inch pizza? (a) Which order gives you more pizza? A. Two medium pizzas B. One large pizza (b) How much more or less tood are two medium pizzas compared to one large pizza? Express your answer as a real number or a fraction. Two medium pizzas = one large pizza's worth of food. (4). A 75 kg man and a 2.5 kg hairless dog go swimming. When they emerge, a 0.33 kg film of water adheres to the man's skin. Assume that the bodies are isometric for the following questions. (a) How much water adheres to the dog's skin? ANSWER = kg (b) What percentage of the mass of each is the water film? Water film as percentage of man's mass= Water film as percentage of dog's mass = (5). T (N/m) (A) (B) (C) (D) r (cm) The graph above shows the variation of the tension (T) with radius (r) in the walls of different arterties. Which artery is most likely to develop an aneurysm? A. (A) B. (B) C. (C) D. (D) (6). The image above is a model of C60 fullrene (a carbon allotrope). A C60 'buckyball' is a quasi-spherical allotrope of carbon, made up of 60 covalently-bonded carbon atoms. If a typical buckyball has a diameter of 1 nm, approximately what would be the expected diameter of a C120 fullrene (i.e. a buckyball made up of 120 carbons)? ANSWER = nm