Physics: AM Radio Station Emits Photons/sec at 1000-kHz

In summary, the 84-kW AM radio station broadcasting at 1000-kHz emits 8.4x10^4 photons per second from its transmitting antenna, with each photon having an energy of 6.626x10^-28 J. This can be calculated using the energy of a single photon formula, where h is Plank's constant.
  • #1
yakin
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Physics: An 84-kW AM radio station broadcasts at 1000-kHz. How many photons are emitted each second by the transmitting antenna? (h=6.626E-32 Js)
 
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  • #2
yakin said:
Physics: An 84-kW AM radio station broadcasts at 1000-kHz. How many photons are emitted each second by the transmitting antenna? (h=6.626E-32 Js)

Energy of a single photon with frequency \(\displaystyle \nu\) is:

\(\displaystyle E_{\nu}=h \nu\)

where \(\displaystyle h\) Plank's constant.

So for our 1000 kHz signal the energy of a single photon is:

\(\displaystyle E_{\nu}=h \nu= 6.626\times 10^{-32} \times 1000 \times 1000= 6.626\times 10^{-28}\) J

The radio station is emitting \(\displaystyle E_s=8.4\times 10^4\) Joules per second, so the number of photons emited per second is:

\(\displaystyle N=\frac{E_s}{E_{\nu}}\)

.
 

Related to Physics: AM Radio Station Emits Photons/sec at 1000-kHz

1. How does an AM radio station emit photons at a specific frequency of 1000-kHz?

An AM radio station emits photons by converting electrical signals into radio waves using an antenna. These radio waves have a specific frequency determined by the electrical signals, which in this case is 1000-kHz.

2. What determines the frequency of an AM radio station's photons?

The frequency of an AM radio station's photons is determined by the electrical signals that are generated by the station. These signals are produced by modulating the amplitude of the carrier wave, which creates variations in the frequency of the emitted photons.

3. How many photons are emitted per second by an AM radio station at 1000-kHz?

The number of photons emitted per second by an AM radio station at 1000-kHz depends on the power of the station, which is typically measured in watts. The higher the power, the more photons will be emitted per second.

4. What is the significance of the 1000-kHz frequency for an AM radio station?

The 1000-kHz frequency is significant for an AM radio station because it falls within the medium-wave frequency band, which is commonly used for AM broadcasting. This frequency band allows for longer range transmission of radio waves compared to higher frequencies.

5. How does an AM radio receiver tune in to the 1000-kHz frequency emitted by a station?

An AM radio receiver uses a circuit known as a tuner to select and amplify a specific radio frequency, in this case 1000-kHz. The tuner allows the receiver to filter out other frequencies and focus on the desired one, allowing for clear reception of the station's broadcast.

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