ANSWERS TO COMPUTATIONAL QUESTIONS

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CHAPTER 8

28. 5.0 × 1014 tons

APPENDIX A

3.141 × 109, 3.1831 × 10−9; 27,182,820,000; 0.0000000000367879

APPENDIX B

5527°C, 9980°F; −270°C, −454°F

APPENDIX M

580 K, 55 km, temperature decreases with height; +8, +9, September 1, September 6; 8 L⊙, 6000 K

APPENDIX P

Energy increases 9-fold; energy decreases to ¼; 2000 J; 0 J; change its moment of inertia, I, and its angular velocity ω.

APPENDIX Q

1/8 kg; ∼0.35 kg; ∼17½

APPENDIX R

Force from Earth in newtons is 4.4 times your weight in pounds; Force in pounds is your weight in pounds; same force in both units as your weight; 9 × 1021 N; It is one-quarter the present force.

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