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The distance between the earth and the moon has been very accurately measured by reflecting laser...
The distance between the earth and the moon has been very accurately measured by reflecting laser light off special reflectors placed by the Apollo manned moon landings (a) A pulse of laser light is emitted from the earth, reflects off the moon and returns. If it takes 2.56s to complete this journey what is the distance from the earth to the moon? (b) The laser is then made to scan across the surface of the moon creating a spot that...
The moon's distance from the earth is ~ 3.84 × 108m. A laser pointer is mounted on a turntable such that its beam repeatedly sweeps over the surface of the moon. If it rotates at a period of 4s, prove that its impact spot travels across the moon at about twice the speed of light. Why does this not violate the law that nothing can travel faster than the speed of light?
The Moon's distance from Earth is 3.84 x 1010 cm. A laser pointer mounted on a turntable such that its beam repeatedly sweeps over the surface of the Moon. If it rotates at a period of 8 s, prove that its impact spot travels across the Moon at about the speed of light.