## 8.8 Answers to the Problem Set

Problem 2 a) $$5.08\times10^{-7}m=5080\mathring{A}$$ (yellow)
b) $$9.66\times10^{-4}m$$ (infrared)
c) $$1.024\times10^{-3}m$$ (infrared)
d) $$1.21\times10^{-3}m$$ (infrared)

Problem 3 a) $$H\approx22W$$ b) $$H\approx25.3W=362 \mbox{ cal/min}$$

Problem 4 $$d$$ = separation of pits $$\approx$$ 6cm.