Question

I asked this before, but the other person got the wrong answer. I tried to solve what they did wrong to get my answers correct, but to no avail. Please help me.

(10%) Problem 9: A certain pond absorbs I 910 WIm for a time period of an hour from the sun. Assume that all of this energy is used to raise the temperature of the pond. The pond water fills a hemisphere of radius r 1.75 m and has a density p 1000 kg/ms. The specific heat capacity of the pond water is ca 4.180 J kg K. 17% Part (a) What is the change in temperature AT in kelvin of the pond due to this energy transfer? 17% Part (b) What is the change to the internal energy of the pond AU in joules, assuming that it does no work and loses no energy as heat? Final Correct Answer Student Answer Grade 4U 3.152E-17 SU 31502835 100% 4 3.15E-7 Grade Detail Correct Student Feedback Final Answer Credit 100% Submission History Totals Feedback Answer Hints 4U 31502835 0% 4 3.15E-7 00% 00% Totals 17% Part (c) If the initial temperature of the pond was 20.0° c, what is the change in the entropy AS in joules per kelvin of the pond? A 17% Part (d) If the pond were at a temperature of T 0.0° C, and covered by a d 0.10 m thick layer of ice at this same temperature, how long Ar in hours would it take to melt the ice? The latent heat of fusion for ice is L 334 kJ/kg, and its density is pice 917 kg/m3. Assume that the volume of ice is a cylinder of thickness d and cross-sectional radius r A 17% Part (e) If the thickness of the ice were doubled, would it take twice as long to melt the ice A 17% Part (f If the radius of the pond were doubled, would it take longer to melt the ice

Answer 1