Physics 101 word problem

Question

Computer chips are etched on circular silicon 44. wafers of thickness 0.300 mm that are sliced from a solid cylindrical silicon crystal of length 25 cm. If each wafer can

hold 400 chips, what is the maximum number of chips

that can be produced from one entire cylinder?

Answer 1

First, we need to find the number of wafers that can be cut from a single crystal.

The crystal is 25cm and each wafer is .3mm. We can divide to get the number of wafers per crystal after getting everything into the same units. 25cm=250mm.

250mm/0.3mm=833.3333 wafers.

Since each wafer yields 400 chips, we multiply 400chips per wafer by 833.33 wafers to get 33,333 chips.