8. Shaming of flying: is it fair? We are seeing in recent years the shaming of flying. The reasoning is that a plane uses a lot of fuel in each flight. For example, as presented in class, a Boeing 737MAX burns 1.6 gallons of jet fuel for each mile in cruise. Explain if such shaming is justified in the overall picture of energy consumption and CO2 emission.

Question 1 During a 30-minute period under clear skies, 2.0 x 10 J of total solar energy were incident upon Bunche Hall. Use this information on energy and time to complete the following tasks. Calculate the mean incident radiant flux over that 30-minute period. What are the units for the previous answer for Radiant Flux Kelvin Meters Microns J/s^2 J/s Watts W/m^2 Nanometers W/m Joules Fahrenheit Celsius

4. When you boil water in a pot on the stove, which heats faster, the metal or the water? Explain. 5. Why do you think different substances heat up and cool down at different rates? 6. Based on the definition above, which of the 4 substances do you think has: a) the highest specific heat capacity? b) the lowest heat capacity? 7. Here are the heat capacities of the four substances: 4.18 J/g °c, 1.00 J/g °c, 0.80 J/g °c, and 0.60 J/g °c. Match and then label each substance with its specific heat capacity on the graph.

1. A popular web site state that a 200. pound person will burn 450. calories/hour bicycling (moderate effort) and 650. calories/hour rock climbing (ascending). A 150. pound person decides to start a training routine in which she will bicycle for 45 minutes, 3 times a week and rock climb for 1.50 hours every weekend. How many calories will she have burned after 8 weeks of training (assuming she consumes at the same rate)? 2. The density of silver is 10.50 g/cm3. If 5.50 g of pure silver pellets are added to a graduated cylinder containing 11.0 mL of water, to what volume will the water in the cylinder rise?