In a cycling road race consisting of a flat section and an uphill section, a particular cyclist pedals with an average power of 324 watts for 5.50 hours on the flat section of the course, and an average power of 418 watts for 30.0 minutes while climbing the uphill section, which has an average grade of 6%. potentially useful information: power = energy/time; 1 watt = 1 joule/sec; 1 kcal = 4186 j
(note, 1 kcal = 1 food calorie)
(a) calculate the average mechanical power output of the cyclist over the whole race.
(b) given that the human body has an efficiency of 25.0% at converting food energy into mechanical
output, how many kcal of food energy must the cyclist consume to replace the mechanical energy expended during the race?
Answers: 2
Physics, 22.06.2019 10:00
Abookcase has a mass of 38 kg and the coefficient of friction between it and the floor is 0.82 what is the maximum force of friction between the bookcase and the floor a 372n b 305n c 412n d 449n
Answers: 1
Physics, 22.06.2019 14:30
Lightning is an example of what phenomenon? a release of a large amount of energyan absorption of a large amount of energya natural electric circuita natural electric current
Answers: 1
Physics, 22.06.2019 18:30
Two trains leave a station at the same time, train a travels at a constant speed of 16 m/s. train b starts at 8.0 m/s but accelerates constantly at 1.0 m/s squared. after 10.0 seconds, which train has the greater speed?
Answers: 1
In a cycling road race consisting of a flat section and an uphill section, a particular cyclist peda...
Business, 12.01.2022 02:30
Mathematics, 12.01.2022 02:30
Mathematics, 12.01.2022 02:30
Health, 12.01.2022 02:30
Mathematics, 12.01.2022 02:30
Mathematics, 12.01.2022 02:40
Mathematics, 12.01.2022 02:40
Mathematics, 12.01.2022 02:40
French, 12.01.2022 02:40
Arts, 12.01.2022 02:40