Peoples Physics Book Version-2

29.1. Appendix A: Answers to Selected Problems (3e) http://www.ck12.org

10. (b) 500,000 N
    
    
    1. 27 m/s^2 ,( 2 .7 g)upward
    
    
    2. 1600 N
    
    
    3. 2200 N
    
    
    4. 10 N
    
    
    5. 10.5 N
    
    
    6. 11 N
    
    
    7. 11 N
    
    
    
    


11. (a) “The Thunder Road” (b) 2.0 m (note: here and below, you may choose differently) (c) 33.5 m^3 (e)
    3 .5 million N (f) 111 MPa

Ch 19: Thermodynamics and Heat Engines

1..
2..
3..
4..
5..
6..
7..
8..
9..
10..
11..
12..
13..
14..
15..
16..
17..
18. 517 m/s
19. 1. 15 × 1012 K
20..
21. 40 N
22.≈ 1028 molecules

1. 21,000 Pa


2. Decreases to 61,000 Pa


3. 5.8 km


4. No


5. allowed by highly improbable state. More likely states are more disordered.


6. 
   
   
   
   8. 34 × 1023
   
   
   
   


7. 
   
   
   
   6. 64 × 10 −^27 kg
   
   
   
   


8. 1600 m/s


9. 744 kPa


10. 
    
    
    
    4. 2 × 1020 or 0.0007 moles
    
    
    
    


11. 0.00785 m^3