A 6 cm diameter potato [α = 1.6 × 10 –7 m 2 /s, and k = 0.68 W/m.K], initially at a uniform temperature of 20°C, is suddenly dropped into boiling water at 100°C. The heat transfer coefficient between...

A 6 cm diameter potato [α = 1.6 × 10^–7
m²/s, and k = 0.68 W/m.K], initially at a uniform temperature of 20°C, is suddenly dropped into boiling water at 100°C. The heat transfer coefficient between the water and the potato surface is 6000 W/ m².K. Determine the time required for the centre temperature of the potato to reach 95°C and energy transferred during this time.