1.Explain why, on a cold day, the metal door handle of an automobile feels colder to the touch than a plastic steering wheel, even though both are at the same temperature.
2.The thermal conductivity of a plain carbon steel is greater than for a stainless steel. Why is this so?
3.Suppose the ring is made of tungsten instead of brass. What will be the effect of heating the lid and jar? Why?
4.For a rubber component that, in its final form is to be vulcanized, should vulcanization be carried out prior or subsequent to the forming operation? Why?