A laser has a power of 22W and a beam of radius of 0.5mm.a) Find the intensity of the laserb) suppose you were floating in space and pointed the laser beam away from you. What would your acceleration be? Assume your total mass, including equipment is 72kg and the force is directed throught your center of mass. Hint: the change in momentum is the same as in the non-reflective case.c) compare the acceleration found in part b with the acceleration of gravity of a space station of mass 1*10^6 kg, if the station's center of mass is 100m away.
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Time taken by the laser beam to return to Earth after reflection from the Moon =2.56 s
Speed of light =3×10
8
m/s
Time taken by the laser beam to reach Moon =1/2×2.56=1.28 s
Radius of the lunar orbit = Distance between the Earth and the Moon
=1.28×3×10
8
=3.84×10
8
m
=3.84×10
5
km
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