Question 4 Which of the following are correct regarding the Tour de France cycling race? Armstrong won the Tour de France 7 times Armstrong never failed a Tour de France drug test Many athletes believed all fellow cyclists were doping All of the above
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Adi S.
Bicyclists in the Tour de France do enormous amounts of work during a race. For example, the average power per kilogram generated by Lance Armstrong (m = 75.0 kg) is 6.50 W per kilogram of his body mass. (a) How much work does he do during a 199-km race in which his average speed is 12.1 m/s? (b) Often, the work done is expressed in nutritional Calories rather than in joules. Express the work done in part (a) in terms of nutritional Calories, noting that 1 joule = 2.389 × 10-4 nutritional Calories.
Jake K.
Bicyclists in the Tour de France do enormous amounts of work during a race. For example, the average power per kilogram generated by seven-time-winner Lance Armstrong (m 75.0 kg) is 6.50 W per kilogram of his body mass. (a) How much work does he do during a 135-km race in which his average speed is 12.0 m/s? (b) Often, the work done is expressed in nutritional Calories rather than in joules. Express the work done in part (a) in terms of nutritional Calories, noting that 1 joule $=2.389 \times 10^{-4}$ nutritional Calories.
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