Why are changes in the global carbon cycle important?I. Burn…

Why are changes in the global carbon cycle important?I. Burning reduces available carbon for primary producers and, therefore, primary consumers.II. Deforestation and suburbanization reduce an area’s net primary productivity.III. Increasing atmospheric concentrations of carbon dioxide could alter Earth’s climate.IV. By using fossil fuels we are destroying a nonrenewable resource.

Leslie, who is single, finished graduate school this year an…

Leslie, who is single, finished graduate school this year and began repaying her student loan. The proceeds of the loan were used to pay her qualified higher education expenses. She has not received any type of educational assistance or scholarships. The amount of interest paid during the year amounted to $3,800. What is the amount and classification of her student loan interest education deduction if her modified AGI is $40,000?  

(4) (30 points) Consider a built up wooden beam subjected to…

(4) (30 points) Consider a built up wooden beam subjected to two point loads. The spacing between nails along the length of the beam is 75 mm. Reaction forces at A and B are provided. (a) Compute the maximum shear force in each nail. (b) Compute the maximum shear stress at the centroid of the beam cross-section.