A plastic bottle containing a liter of water at 20˚C is placed inside a freezer, whose temperature is maintained at -18˚C.The plastic bottle limits the transfer of energy to a mean value of 800 joule per minute for two hours and has negligible specific heat capacity.For water, the specific heat capacity is 4200 J kg^-1 K^-1 and specific latent heat of fusion 3.3x10^4 J Kg^-1.what is the temperature of water at the end of the two hours?A. 0˚CB. -0.36˚CC. -3.0˚CD. -18˚CI couldn't do this question. It's multiple choice question and whatever I do, my answer is completely outside the 4 choices. Can anyone help? If possible, explain it as you would to a 5-year old, please.
Rajesh , 7 Years ago
Grade 12th pass
