A small rocket of mass 10 kg emits an intense light beam for propulsion. What must be the minimum total power (intensity times area) of the beam (in GW) needed to lift the rocket against the force of gravity at the Earth's surface?

A small rocket of mass 10 kg emits an intense light beam for propulsion. What must be the minimum total power (intensity times area) of the beam (in GW) needed to lift the rocket against the force of gravity at the Earth's surface?

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter39: Relativity

Section39.7: The Relativistic Doppler Effect

Problem 39.3CE

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A small rocket of mass 10 kg emits an intense light beam for
propulsion. What must be the minimum total power
(intensity times area) of the beam (in GW) needed to lift the
rocket against the force of gravity at the Earth's surface?

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