Sam designs a container to keep food warm for a long time. He insulates a metal container with a layer of thermally non-conducting material. He observes that after some time, the food in the container gets cold.
What should Sam do to keep the food warm for a longer time?
OA.
Add another layer of thermally non-conducting material to maximize heat loss.
Remove the layer of thermally non-conducting material to minimize heat loss.
ОВ.
OC. Remove the layer of thermally non-conducting material to maximize heat loss.
OD. Add another layer of thermally non-conducting material to minimize heat loss.