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2 https://session.masteringphysics.com/myct/itemView?assignmentProblemID-55569985 Physics 2001 Fall 2015 HMWK #7 Problem 7.39: Volcanoes on Io Signed in as Randi ProvostHelp Close Resources « previous 6 of 13 |next What must be the speed of material just as it leaves the volcano to reach an altitude of 400 km? Express your answer in meters per second to three significant figures Problem 7.39: Volcanoes on lo lo, a satellite of Jupiter, is the most volcanically active moon or planet in the solar system. It has volcanoes that send plumes of matter over 500 km high. Due to the satellite's small mass, the acceleration due to gravity on lo is only 1.81 m/s2 , and lo has no appreciable atmosphere. Assume that there is no variation in gravity over the distance traveled. u= 1200 m/s Submit My Answers Give Up Correct Part B If the gravitational potential energy is zero at the surface, what is the potential energy for a 29 kg fragment at its maximum height on lo? Express your answer in Joules to two significant figures U= 2.6x 107 J Submit My Answers Give Up Correct Part C How much would this gravitational potential energy be if it were at the same height above earth? Express your answer in Joules two significant figures Submit My Answers

Explanation / Answer

C

U= m*g*H = 29*9.81* 500*103  = 14.22 *107  J

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