Mr. Byrne                                            September 8, 2006

Physics

 

HOMEWORK

 

  1. Write the following in proper scientific notation:  a) 1,156,000  b) 218  c) 0.0068  d) 27.635  e) 0.21  f) 22

 

 

  1. Write the following in decimal form:  a) 7.1 x 103   b) 8.69 x 104   c) 6.6 x 10-1    d) 8.76 x  102    e) 8.62 x 10-5

 

 

  1. How many significant figures do each of the following numbers have:  a) 142  b) 81.60  c)  7.63  d) 0.03  e) 0.0086  f) 3236  and g) 8700

 

 

  1. Multiply the following and take into account the rule regarding significant figures:  a) 2.079 x  102 and 0.0072 x 10-1    b) 2.0 x 105 and 0.035 x 102

 

 

  1. A rectangle is 3.7 m long and 2.37 m wide.  What is its area?

 

 

  1. What is the area of a circle of radius 6.37 x 106 m?

 

 

  1. Add 7.2 x 103 s + 8.3 x 104 s + 0.09 x 106 s.

 

 

  1. Calculate the a) perimeter and b) area of a rectangle with a length of 1.5 m and a width of 25 cm.

 

 

  1. Convert the following:

a)      0.75 km to cm

b)     0.675 mg to g

c)      2 h 10 min to s

d)     790  cm2 to m2

e)      60 mi/h to m/s

1 mi = 1609 m; centi = 1/100; milli = 1/1000; kilo = 1000

 

 

  1. Can a set of measurements be precise but not accurate?  Explain.

 

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