What is the efficiency of a frictionless ramp that is 10 meters long and 1 meter high?
1 answer:
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The power of the laser is
by using the relationship between power, energy and time, we can find the energy delivered by the laser in 1 second:
The frequency of the photons of this light is given by
and the energy of a single photon is
In order to find the number of photons emitted per second, we must divide the total energy emitted by the laser by the energy of a single photon, and we get:
by using the relationship between power, energy and time, we can find the energy delivered by the laser in 1 second:
The frequency of the photons of this light is given by
and the energy of a single photon is
In order to find the number of photons emitted per second, we must divide the total energy emitted by the laser by the energy of a single photon, and we get: