Figure 7.43 The Daedalus 88 in flight. (credit: NASA photo by Beasley) Table 7.2 Efficiency of the Human Body and Mechanical Devices [1] Activity/device Efficiency (%) |Cycling and climbing 20 Swimming, surface 2 Swimming, submerged 4 Shoveling 3 Weightlifting Steam engine 17 Gasoline engine 30 Diesel engine 35 Nuclear power plant 35 Coal power plant 42 Electric motor 98 Compact fluorescent light 20 Gas heater (residential) 90 Solar cell 10

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Chapter1: Units, Trigonometry. And Vectors
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Kanellos Kanellopoulos flew 119 km from Crete to Santorini, Greece, on April 23, 1988, in the Daedalus 88, an aircraft powered by a bicycle-type drive mechanism (as shown). His useful power output for the 234-min trip was about 350 W. Using the efficiency for cycling from Table, calculate the food energy in kilojoules he metabolized during the flight.

Figure 7.43 The Daedalus 88 in flight. (credit: NASA photo by Beasley)
Transcribed Image Text:Figure 7.43 The Daedalus 88 in flight. (credit: NASA photo by Beasley)
Table 7.2 Efficiency of the Human Body and
Mechanical Devices
[1]
Activity/device
Efficiency (%)
|Cycling and climbing
20
Swimming, surface
2
Swimming, submerged
4
Shoveling
3
Weightlifting
Steam engine
17
Gasoline engine
30
Diesel engine
35
Nuclear power plant
35
Coal power plant
42
Electric motor
98
Compact fluorescent light
20
Gas heater (residential)
90
Solar cell
10
Transcribed Image Text:Table 7.2 Efficiency of the Human Body and Mechanical Devices [1] Activity/device Efficiency (%) |Cycling and climbing 20 Swimming, surface 2 Swimming, submerged 4 Shoveling 3 Weightlifting Steam engine 17 Gasoline engine 30 Diesel engine 35 Nuclear power plant 35 Coal power plant 42 Electric motor 98 Compact fluorescent light 20 Gas heater (residential) 90 Solar cell 10
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