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Neptune Has a Mass of 1

Question 54

Multiple Choice

Neptune has a mass of 1.0*1026 kg and a radius of 25,000 km.What is the escape velocity of Neptune? [This question requires the use of mathematics.The value of the gravitational constant is 6.67*10-11 Nt m2 kg-2.]


A) 17 km/sec
B) 7.5 km/sec
C) 23 km/sec
D) 7.3*105 km/s
E) 8.9*1010 km/s

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