4. An apple is 10. cm in diameter. Estimate its volume in mm3 and in3 5. An appl

Question

4. An apple is 10. cm in diameter. Estimate its volume in mm3 and in3 5. An apple weighs approximately 1 N on earth. What would its weight be on the moon? Orn Mars? (Note: use web resources to find any additional information you need to solve this problem.) 6. Calculate the following to the correct number of significant figures a) 20/7 b) 20.0/7 c) 20/7.0 d) 20.7.0 e) 20.0/7.00 7. Round each of the following to three significant figures: a)1.53 b) 15.345 Carry out the following calculations using appropriate significant figures a. 26.4 6.03 c) 16.65 d) 102.04 e)-124.7f 0.00123456 8 b. 13.25 9. a. Find the x- and y-components of each of the vectors below F1 24. kN F2 15. kN 65 4 b. Find the the x- and y-components of Fa, where F3 F1+ F2. c. What is the magnitude of F3? d. What angle does Fs make with the positive x-axis? e. Write a vector expression for F3 (using the unit vectors i andj).

Explanation / Answer

4)

given d = 10 cm

r = d/2 = 10/2 = 5 cm

volume of the apple, V = (4/3)*pi*r^3

= (4/3)*pi*5^3

= 524 cm^3 or 5.24*!0^-4 m^3

5) weight of apple on the moon = weight of apple on the earth/6

= 1/6

= 0.167 N

6)

a) 3

b) 3

c) 3

d) 3.0

e) 3.00

7)

a) 1.53

b) 15.3

c) 16.6

d) 102

e) -125

f) 0.00123

8)
a) 32.4

b) 70

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