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3. For a person flying on an airplane at an altitude of 5.5 km, by what percentage the weight of a person changes compared with its weight on the ground? A) 0.6% B) 0.25% C) 0.17% D) 1.2%
7. What is the gravitational force between two nuclei, each of mass 3.20 x 10-27 kg, which are separated by a distance of 1.06 x 10-10 m? (G= 6.67 x 10-11 Nm2/kg2) A) 6.08 x 10-45 N B) 6.08 x 10-44 N C) 6.08 x 10-43 N D) 6.08 x 10-42 N