How much heat energy needs to be given up to freeze 2.12 kg of milk if initially the milk was at the room temperature 20 oC? Assume that the latent heat of fusion of milk is 27570

Assume Lake Michigan contains 4.90 x 1012 m³ of water, and assume the water's density is that of water at 20°C and 1 atm. (a) How much energy (in J) is required to raise the temperature of that volume of water from 12.2°C to 24.4°C? 4.1E19 From the density of water and the volume, what is the mass of the water? What is specific heat? How is it related to the energy input, mass, and temperature change? Use it to solve for the energy. Be careful with units. J (b) How many years would it take to supply this amount of energy by using a power of 1,400 MW generated by an electric power plant? 926 How is power related to energy and time? Knowing the energy from part (a), can you find the time? Be careful with units. Make sure you convert the time in seconds to years. yr

A glass container has a total wall area (including the lid) of 1.75 m and a wall thickness of 1.5 cm. It's filled with 1000 g of ice at 0 C. How many seconds will it take to completely melt all the ice? (Latent heat of fusion is 80 cal/g and Thermal conductivity of glass is 0.8 WIim K) O 120 s O 14, 400 s O 2, 800 s O 200 s

During a bout with the flu an 80-kg person ran a fever of 39 oC. Consider that the specific heat of any human body is 3470 J/kg K, how much energy does the body need to burn to reach the fever temperature?