2 Part Question: Calculation: The renewable resource with the greatest potential for energy creation at almost 23,000 Terawatts per year is solar energy.  The WORLD’s current annual need for energy is around 18 Terawatts.  So calculate how long it takes the sun to generate 1 full YEAR of energy for the WORLD!   Short Essay:  Discuss the implications of the potential for solar power.  Why have we not completely focused in this area?  What happens if we do and the sun collapses?  

Short Essay:  How many friends do you really have?  Oxford psychologist, Robin Dunbar, found that the average number of friends considered dependable is 4.1, and the number of friends who expressed sympathy during crisis is 13.6.  What do you think?  Does that fit with your social network?

Which of the following best describes water recycling?

Pick three of the following renewable energy sources and for each, LIST one positive potential and one negative concern: geothermal, solar, wind, hydropower, fuel cells, or biomass. Each answer needs to be 1) unique, 2) scientifically detailed = not vague, & 3) cannot be present in the exam questions above!     Positive Potential Negative Concern Renewable Source 1       Renewable Source 2       Renewable Source 3      

Short Essay: Oil, gas, and coal are referred to as fossil fuels. Explain

Consider a stationary object placed at rest on a horizontal table. A firecracker explodes inside it and three unequal parts of the original object fly away in different directions. The masses of pieces A,B and C are, respectively, M/3, M/2 and M/6 and the angles are

A box of mass M is placed on a ramp that has a non-zero angle

Bonus Question:  Thank you all for a great semester.  I am teaching several courses in the fall including genetics, biology 2, and environmental studies 1 & 2.  Are you considering any of these courses?  Why or why not if I may ask?  Brutal honesty is appreciated! It has been a treat (although rather quick) working alongside you all this semester! Take care and reach out if you need anything moving forward! PW

In developing nations, as much as 90% of energy comes from what renewable resource _________________________.

The angular momenta of a particle in four different situations are (1) ℓ = 3t + 4; (2) ℓ = −6t2; (3) ℓ = 2; (4) ℓ = 4/t In which situations is the net torque acting on the particle negative and increasing in magnitude?