Sust Ethics & Prof Issues HW2 6 Questions

1) How long would it take to heat water from 30oF to 120 oFin a 40 gal, 5 kW water tank. 2)How much would be the final temperature if 1.0 kg of water at 20oC id heated by condensation of 30 g of steam at 100 oC.lv=3x106j/kg cw=4.2x103j/kgc. 3)A student wants to cool 0.25 kg of water initially at 25 oC, by adding ice initially at -25oC. How much ice should be add so that final temperature will be 0oC .Lf=3.34x105j/kg 4)Please go to the http://www.sunposition.info/sunposition/spc/locations.php#1and get sun path data for your Birthday on your hometown. Take the sun path data to Excel and plot it.(BD=(April/22) 5)Please design the door overhang for maximum sun in winter and no sunin summer, chose the appropriate angel. Dec 21=30 deg July 21=77deg 6) Explain briefly how to make cold.