2. What is the amount of heat released when 0.8 kg of water at 25°C cools until it becomes ice at -6°C? State the assumptions make in your calculations. [Specific heat capacity of water, Cwater = 4.2 x 103 J kg 1 °C-?, specific heat capacity of ice, Cice = 2.0 x 103 J kg-1 °C -1 and specific latent heat of fusion of ice, le = 3.34 x 105 J kg '] ​

Total solidification times of three casting geometries are to be compared: a sphere, a cylinder, in which the length-to-diameter ration - 1.0, and a cube. volume = 1000 cm^3 for all three shhapes, and the same casting alloy is used. a) determine the solidification times of each geometry b) based on the results of part (a), which geometric element would make the best riser? c) if the mold constant = 3.5 min/cm^2 in chvorinov's rule, compute the total solidification time for each casting.

Afrequency generator sends a 550 hz sound wave through both water and ice. what is the difference in wavelength between the wave produced in ice and the wave produced in water?

The mantle is made up of which structural zones?