PAU Physics (Castilla Y León) Practice Questions - Castilla Y León PAU Physics Exam Física 2o Bachillerato Exam

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What is the gravitational potential V at a point located at distance r = 3 R_E from Earth's center? (Use Earth mass M_E = 5.97 x 10^24 kg, R_E = 6.37 x 10^6 m, G = 6.67 x 10^-11 N m^2/kg^2).

-6.25 x 10^7 J/kg -3.13 x 10^7 J/kg -2.08 x 10^7 J/kg -1.04 x 10^7 J/kg

Correct Answer:

-2.08 x 10^7 J/kg

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