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Question 1. Typical treadmill jogging burns approximately 500 kcal/hr. How long would you need to run on a treadmill to balance the energy consumed in the typical morning routine listed below? Please also state how much energy is consumed (in kJ).
2 light bulbs: 1 hr @ 60W each

Question 2. Typical treadmill jogging burns approximately 500 kcal/hr. How long would you need to run on a treadmill to balance the energy consumed in the typical morning routine listed below? Please also state how much energy is consumed (in kJ).
Toaster: 5 minutes @ 1200 W

QUESTION 3
Typical treadmill jogging burns approximately 500 kcal/hr. How long would you need to run on a treadmill to balance the energy consumed in the typical morning routine listed below? Please also state how much energy is consumed (in kJ).
                      Coffee maker: 20 minutes @ 900W

QUESTION 4
Typical treadmill jogging burns approximately 500 kcal/hr. How long would you need to run on a treadmill to balance the energy consumed in the typical morning routine listed below? Please also state how much energy is consumed (in kJ).
Hairdryer: 5 minutes @ 1200W

QUESTION 5
Typical treadmill jogging burns approximately 500 kcal/hr. How long would you need to run on a treadmill to balance the energy consumed in the typical morning routine listed below? Please also state how much energy is consumed (in kJ).
Radio: 1 hr @ 30W

QUESTION 6
Calculate the total amount of energy you are using in your morning routine calculated in questions 1-5 and figure out how long you have to run on the Treadmill in total.

QUESTION 7
How long would the sun need to shine on a roof-top 90000 cm2 solar panel (assuming perfect conversion efficiency) to balance the same energy consumption (total in 1)? Solar radiation reaching the surface (Fsurf) = 198 W/m2.

QUESTION 8
The total yearly energy expenditure of the The United States is ~ 1020 Joules. If we wanted to generate this amount of energy through human work, presuming each person rode a power-generating bicycle 8 hours a day, 5 days a week, 50 weeks a year, how many people would we need? (Presume the human-powered bicycles would produce 80W steadily over an 8 hr shift. This is a value typical for a “healthy” individual). How does that number compare to the global population (6.3 billion)?

QUESTION 9
How many original glazed Krispy Kreme donuts would it take to equal the yearly energy expenditure of the US (200 kcal/donut)? Compare this number to the national debt $ 29,696,505,748,777

QUESTION 10
1. Assuming no compaction of donuts, how tall a tower would these donuts make if stacked on top of each other? 1 donut is ~3 cm thick. Compare this to the distance from the earth to the Sun. 1.5 x 1011 m.

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