You are eating a bowl of soup at 85 degC. The soup bowl has a diameter of 6.0 inches and the air above the bowl is at a temperature of 21degC. Determine the rate of heat transfer (W) from the soup by a) natural convection where h = 4.5 W/m^2-K and (b) forced convection (which occurs when you blow on the soup) where the coefficient of heat transfer h=23 W/m^2-K

You are eating a bowl of soup at 85 degC. The soup bowl has a diameter of 6.0 inches and the air above the bowl is at a temperature of 21degC. Determine the rate of heat transfer (W) from the soup by a) natural convection where h = 4.5 W/m^2-K and (b) forced convection (which occurs when you blow on the soup) where the coefficient of heat transfer h=23 W/m^2-K