Peoples Physics Book Version-2

http://www.ck12.org Chapter 29. Answers to Selected Problems Version 2

1. 1.9 MW

2. 0.56 MW

3. 1.3 Mw


4. 54%


5. 240 kW


6. 890 kW


7. 590 kW


8. 630 kg


9. 98%


10. 4.0%


11. 12%


12. 14800 J


13. 12,000 J


14. (b) 720 K,300 K,600 K (c) isochoric; isobaric (d) C to A; B−C (e) 0.018 J


15. (b) 300 K,1200 K


16. 1753 J
    2.−120 J


17. 80 J


18. 35 J
    5.−100 J,80 J,80 J

Ch 20: Special and General Relativity

1. longer


2. ?=∞, the universe would be a dot


3. 76.4 m, 76 .4 m
   4..


4. ?= 1. 002


5. 
   
   
   
   9. 15 × 107 m/s
   
   
   
   


6. 
   
   
   
   2. 6 × 108 m/s
   
   
   3. 0.659 km
   
   
   4. 
      
      
      
      22. 4
      
      
      
      
   
   
   5. 
      
      
      
      4. 92 × 10 −^5 m/s
      
      
      
      
   
   
   6. 14.7 km
   
   
   
   


7. 2900 m


8. 
   
   
   
   1. 34 × 10 −^57 m
   
   
   
   


9. 0.303 s


10. 
    
    
    
    2. 9 × 10 −^30 kg, yes harder to accelerate
    
    
    
    


11. f


12. c


13. 
    
    
    
    4. 5 × 1016 J; 1. 8 × 1013 softballs
    
    
    
    


14. 
    
    
    
    1. 568 × 10 −^13 J
    
    
    
    


15. 
    
    
    
    3. 04 × 106 J