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Planet Zeta-7 has a surface gravitational acceleration of 1.84 m/s² and a surface escape velocity of...

Planet Zeta-7 has a surface gravitational acceleration of 1.84 m/s² and a surface escape velocity of 2.75 km/s. Planet Alpha-9 has a mass that is 2.3 times that of Zeta-7 and a radius that is 3.1 times that of Zeta-7. What is escape velocity from the surface of Alpha-9?

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