Page 1625 - College Physics For AP Courses
P. 1625

Answer Key
1613
1
(c)
3
(a)
5
(a)
7
(a)
9
(d)
Chapter 13
Problems & Exercises
1

3
 and  5

7
(a)   
    
        
Because the area gets smaller, the price of the land DECREASES by  15
  
        
 
17
(a) 9.35 mL
(b) 7.56 mL
19
0.832 mm
21
We know how the length changes with temperature:    . Also we know that the volume of a cube is related to its length by    , so the final volume is then          . Substituting for  gives
         
Now, because  is small, we can use the binomial expansion:
        
So writing the length terms in terms of volumes gives          and so
        
(b) 
      

9
169.98 m
11
 
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