BIO Human-Powered Flight Human-powered aircraft require a pilot to pedal, as in a bicycle, and produce a sustained power output of about 0.30 hp. The Gossamer Albatross flew across the English Channel on June 12,10979, in 2 h 49 min. (a) How much energy did the pilot expend during the flight? (b) What is the minimum number of Snickers bars (280 Cal per bar) the pilot would have to consume to be “fueled up” for the flight? [ Note: The nutritional calorie, 1 Cal. is equivalent to 1000 calories (1000 cal) as defined in physics. In addition, the conversion factor between calories and joules is as follows: 1 Cal = 1000 cal = 1 kcal = 4184 J. ]
BIO Human-Powered Flight Human-powered aircraft require a pilot to pedal, as in a bicycle, and produce a sustained power output of about 0.30 hp. The Gossamer Albatross flew across the English Channel on June 12,10979, in 2 h 49 min. (a) How much energy did the pilot expend during the flight? (b) What is the minimum number of Snickers bars (280 Cal per bar) the pilot would have to consume to be “fueled up” for the flight? [ Note: The nutritional calorie, 1 Cal. is equivalent to 1000 calories (1000 cal) as defined in physics. In addition, the conversion factor between calories and joules is as follows: 1 Cal = 1000 cal = 1 kcal = 4184 J. ]
BIO Human-Powered Flight Human-powered aircraft require a pilot to pedal, as in a bicycle, and produce a sustained power output of about 0.30 hp. The Gossamer Albatross flew across the English Channel on June 12,10979, in 2 h 49 min. (a) How much energy did the pilot expend during the flight? (b) What is the minimum number of Snickers bars (280 Cal per bar) the pilot would have to consume to be “fueled up” for the flight? [Note: The nutritional calorie, 1 Cal. is equivalent to 1000 calories (1000 cal) as defined in physics. In addition, the conversion factor between calories and joules is as follows: 1 Cal = 1000 cal = 1 kcal = 4184 J. ]
Imagine you are out for a stroll on a sunny day when you encounter a lake. Unpolarized light from the sun is reflected off the lake into your eyes. However, you notice when you put on your vertically polarized sunglasses, the light reflected off the lake no longer reaches your eyes. What is the angle between the unpolarized light and the surface of the water, in degrees, measured from the horizontal? You may assume the index of refraction of air is nair=1 and the index of refraction of water is nwater=1.33 . Round your answer to three significant figures. Just enter the number, nothing else.
Applications and Investigations in Earth Science (9th Edition)
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