248_Physics ProblemsTechnical Physics

# 248_Physics ProblemsTechnical Physics - 250 Potential...

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250 Potential Energy ANSWERS TO EVEN PROBLEMS P8.2 (a) 800 J; (b) 107 J; (c) 0 P8.42 7 9 3 2 3 x y x e j ± ± i j P8.4 (a) 1 11 10 9 . × J ; (b) 0.2 P8.44 see the solution P8.6 1.84 m P8.46 (a) r = 1 5 . mm and 3.2 mm, stable; 2.3 mm and unstable; r → ∞ neutral; P8.8 (a) 10.2 kW; (b) 10.6 kW; (c) 5 82 10 6 . × J (b) < 5 6 1 . J J E ; (c) 0 6 3 6 . . mm mm r ; (d) 2.6 J; (e) 1.5 mm; (f) 4 J P8.10 d kx mg x = 2 2 sin θ P8.48 see the solution P8.12 (a) see the solution; (b) 60.0 ° P8.50 33.4 kW P8.14 (a) 2 1 2 1 2 m m gh m m + b g b g ; (b) 2 1 1 2 m h m m + P8.52 (a) 0.588 J; (b) 0.588 J; (c) 2 42 . m s; (d) 0.196 J; 0.392 J P8.54 0.115 P8.16 160 L min P8.56 (a) 100 J; (b) 0.410 m; (c) 2 84 . m s ; P8.18 40.8 ° (d) 9 80 . mm; (e) 2 85 . m s P8.20 8 15 1 2 gh F H G I K J P8.58 (a) 3 4 3 2 x x e j ± i ; (b) 1.87; –-0.535; (c) see the solution P8.22 (a) see the solution; (b) 35.0 J P8.60 (a) 0.378 m; (b) 2 30 . m s; (c) 1.08 m
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