Edit View History Bookmarks Window Help Chapter 7 Problem 7.50 c) 10of10 Part A

Question

Edit View History Bookmarks Window Help Chapter 7 Problem 7.50 c) 10of10 Part A requre a plot to peda, as n a bicyde·ard co a sustained power output of about 0.30 hp. The Gossamar Albatross few across the English Channel on June 12, 1979, in 2 h 49 min How much energy did the pilot expend during the fight? Express your answer uning two significant figures MJ Part B How many Srickers candy bars (280 Cal per barl wouid the pilat have to consue lo b Tunied uo for the ligh? Nole The ntrional caloria 1 Cal sqet to 1000 calories(1000 cal) defired in physics h adsiion, the conversion factoe Detween caloried and jouies is as follows 1 Cal 1000 cal t kcal 4186 3. Express your answer as an integer 6 3 WE

Explanation / Answer

1 hp = 746 W

0.30 ho = 0.30×746 = 223.8 W

Energy = Power × time

= 223.8 × (2×60+49)×60

= 223.8 × 169 × 60 J = 2269332 J

= 2.27 MJ

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