A 5-lb roast initially at 70F is placed in an oven at 350F. Assuming that the heat-transfer

Question:

A 5-lb roast initially at 70ºF is placed in an oven at 350ºF. Assuming that the heat-transfer coefficient is 2.5 Btu/h · ft2 · ºF and that the thermal properties of the roast may be approximated by those of water, estimate the time required for the center of the roast to attain a temperature of 200ºF.