If the components of the human circulatory system (arteries, veins, and capillaries) were completely extended and placed end to end, the length would be on the order of 100 000 km. Would the length of the circulatory system reach around the circumference of the Moon? If so, how many times?
Answer to relevant QuestionsThe human heartbeat, as determined by the pulse rate, is normally about 60 beats/min. If the heart pumps 75 mL of blood per beat, what volume of blood is pumped in one day in liters? The density of metal mercury is 13.6 g/cm3. (a) What is this density as expressed in kilograms per cubic meter? (b) How many kilograms of mercury would be required to fill a 0.250- L container? The interior storage compartment of a restaurant refrigerator measures 1.3 m high, 1.05 m wide, and 67 cm deep. Determine its volume in cubic feet. The lightest solid material is silica aerogel, which has a typical density of only about .010 g/cm3. The molecular structure of silica aerogel is typically 95% empty space. What is the mass of 1 m3 of silica aerogel? Two students go into Tony’s Pizza Palace and order a 12-in. (diameter) pizza. Shortly thereafter, the waitress brings an 8-in. pizza special. She explains that the 12-in. pizza was given to someone else by mistake and they ...
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