Athlete Climbs w/ 4 Potato Chips - Amount Heated 44

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AI Thread Summary
An athlete weighing 60.0 kg with an energy conversion efficiency of 24% and an average power output of 325 W can climb approximately 4476.9 seconds worth of height using the energy from four potato chips, which provide 1.45 million joules of usable energy. In a separate calculation, if the same amount of chips were burned to heat water from 13°C to 20°C, the energy transferred would be 1130.5 joules. This demonstrates the relationship between energy consumption from food and physical exertion, as well as the potential for energy conversion in heating applications. The calculations highlight the efficiency of energy use in both climbing and heating scenarios. Overall, the discussion emphasizes the practical applications of energy conversion in athletic performance and thermodynamics.
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Homework Statement


A)If an athlete (whose mass is 60.0kg) has an energy conversion effiency of 24% and she has an average power of 325W when climbing stairs how high would she be able to climb with the energy consumed from eating 4 potatop chips(28g of chips has 610 kJ of energy and 28g of chips is approximately 15 chips.
B)If the bag of chips in the above questions had been burned and used to heat water from 13degrees celcius to 20 degress celcius, then how much water was being heated(assuming 100%energy conversion)

Homework Equations


Eout/Ein*100%


The Attempt at a Solution



m=60.0kg
Efficiecny=24%
P=325 W
 
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A)Ein= 610 kJ= 6.1*10^6 JEout= Ein*efficiencyEout=6.1*10^6 J *0.24 Eout=1.45*10^6 J Energy consumed from 4 potato chips= 1.45*10^6 JPower=E/tt=E/Pt=1.45*10^6 J /325 Wt=4476.9 secB)Heat energy transferred=mass*Cp*deltaTMass of water=28gCp=4.186J/g*KdeltaT= 20-13=7KHeat energy transferred=28g*4.186J/g*K*7KHeat energy transferred=1130.5 J
 

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