1-21 할리데이 11판 솔루션 일반물리학

풀이자주:문제의 유효숫자가 애매하여 다양하게 표현했습니다. $$\begin{cases} 1\ut{Jalapeño}&=4000\ut{SHU}\\ 1\ut{Habanero}&=300000\ut{SHU}\\ \end{cases}$$ $$\begin{aligned} \Ans=&\frac{312\times 2\ut{Jalapeño}}{1\ut{Habanero}}\\ =&\frac{312\times 2\ut{Jalapeño}\times\cfrac{4000\ut{SHU}}{1\ut{Jalapeño}}}{1\ut{Habanero}\times\cfrac{300000\ut{SHU}}{1\ut{Habanero}}}\\ =&\frac{312\cdot2\cdot4000}{300000}\\ =&\frac{208}{25}\\ =&8.32\\ \approx&8 \end{aligned}$$