A 1200kg car is driving at 40m/s on a wet asphalt road. If the driver slams on the brakes and the car skids to a halt. a)What is
2 answers:
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The power of the antenna is
and since the power is the emitted energy divided by the time, the energy emitted per second is
The frequency of the emitted photons is
So the energy of a single photon is
Therefore, to find the number of emitted photons per second, we should divide the total energy emitted by the antenna in 1 second by the energy of a single photon:
and since the power is the emitted energy divided by the time, the energy emitted per second is
The frequency of the emitted photons is
So the energy of a single photon is
Therefore, to find the number of emitted photons per second, we should divide the total energy emitted by the antenna in 1 second by the energy of a single photon:
I added individual steps for clarity. Note that g must be positive if the solution is to be real.
Let me know if you have any questions.