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- 8. A400 hp engine in a 1,600 kg car applies maximum force for 2 seconds to accelerate the car onto the interstate. It the car moves at 8m/s before accelerating, what is its speed after the 2 seconds of acceleration?
- 80m/s while a 15,000 kg truck is traveling at 20m/s Which has the greater momentum? A 300 kg snowmobile is traveling at 30m/s How fast would a 200 kg snowmobile need to travel to have the same momentum?
- 18. A 0.460 N force exists between two charges separated by 0.47 m. The first charge is 9.4 pC,what is the magnitude of the second charge? (1mu C=1times 10^-6C) square theoreman square Answer: 19. Two objects are separated by 6.5 km the first mass is 2.1times 10^kkg and the gravitabional force is 3.4 N, what is the mass of the second object? square square . Work: Answer: 1.0times 10^12kg 20.A 1.83times 10^10 V force exists between spheres charact 45C and 6.2 C. what is that square Formula: square Work: 4.3.7 m b. 14 m C. 12 m 437 a
- 18. When 1.6 mathrm(~kg) point charge is 15 mathrm(~m) from a second point charge, the gravitational force each one experiences is 573 mathrm(~N) . What is the mass of the second charge? Given: & Work: Formula: & Answer: 8.3 times 10^-12 mathrm(~kg) b. 1.2 times 10^11 mathrm(~kg) c. 1.2 times 10^12 mathrm(~kg) d. 8.5 times 10^12 mathrm(~kg) 19. Two electrons are 20 mathrm(~m) apart at closest approach. What is the magnitude of the maximum electric force that they exert on each other? (c=-1.60 times 10^-14 mathrm(C)) Given: & Work: Formula: & Answer: a. 1.2 times 10^-9 mathrm(~N) b. 5.8 times 10^11 mathrm(~N) c. 2.5 times 10^-6 mathrm(~N) d. 1.6 times 10^-11 mathrm(~N) 20. The force of attraction that a -40.0 mathrm(C) point charge exerts on a +108 mathrm(C) point charge has magnitude 4.00 mathrm(~N) . How far apart are these two charges? Given: & Work: Formula: & Answer: a. 1.38 times 10^3 mathrm(~m) b. 1.9 times 10^4 mathrm(~m) c. 3.12 times 10^4 mathrm(~m) d. 9.71 times 10^2 mathrm(~m)
- 6. 3 points: A hamster has a momentum of 16kgm/s when traveling with a velocity of 5.6 mls. What is the hamster's mass? Show your work, draw box around your answer and include units!
