QUIZ 1 CH. 37---ANSWERS
discussion questions--1,3,7,8,14
     exercises--37.2: 1; 37.3: 2,4,6,8; 37.4: 9,10,11,12,13.
     problems---Note: They  tend to combine (i.e., synthesize)
the first 4 sections-49(a) only, 50, 51, 52, 54.
EVEN ANSWERS   2, 4, 6, 8, 10, 12, 50, 52, 54.
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2.   (a)

      
     

(b) 
      




4.   

(a) The two time measurements are made at the same place on Mars by an observer at rest there, so the observer on Mars measures the proper time.

(b)







6.

(a)

(b)

(c) At your origin you read the original  
8. (a) The time of 12.0 ms measured by the first officer on the craft is the proper time.

(b) gives .
10.



 gives .
12.

(a)

(b)

(c) time dilation formula: 

from : 

The two results agree.
50
52.

Light travels 42.2 light years in 42.2 yr, so . .  She measures her biological age to be

Her age measured by someone on earth is .
54.

 small so  thus

The difference in the clock readings is  The clock on the plane has the shorter elapsed time.