A rectangular solid is 15 by 10 by 20cm and has the properties of fireclay brick. It is initially uniform in temperature at 300C and then suddenly exposed to a convection environment at 80C and h=110W/m2C. Calculate the time for (a) the geometric center and (b) the center of each face to reach a temperature of 190C. Also calculate the heat loss for each of these times. A rectangular solid is 15 by 10 by 20cm and has the properties of fireclay brick. It is initially uniform in temperature at 300C and then suddenly exposed to a convection environment at 80C and h=110W/m2C. Calculate the time for (a) the geometric center and (b) the center of each face to reach a temperature of 190C. Also calculate the heat loss for each of these times