What is the energy of a 0.07078nm photon?

In summary, the energy of a photon is a measure of the amount of electromagnetic energy it carries and is directly proportional to its frequency. It can be calculated using the equation E = hf and is typically measured in electron volts or joules. The energy of a photon also relates to the electromagnetic spectrum, with higher frequency photons having higher energy. Some everyday examples of photons and their energies include visible light, radio waves, X-rays, and gamma rays.
  • #1
XTEND
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Homework Statement



Calculate energy of a 0.07078nm photon

Homework Equations



E = hc / lamda

The Attempt at a Solution



(6.63x10E-34)(3.0x10E8) / (7.078x10E-11)(1.60x10E-19)

=17563.2 eV

But the correct answer is 17520
 
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  • #2
Close enough.
 
  • #3
is it my sig figs?
 
  • #4
Yes. You have way more sig figs in your answer than in your input values.
 
  • #5
okay. Do I need to use 4 sig figs for all the values? I'm getting 17514.8 now. It's too low.
 

What is the energy of a photon?

The energy of a photon is a measure of the amount of electromagnetic energy that the photon carries. It is directly proportional to the frequency of the photon, which is a measure of how many waves of the electromagnetic field pass a given point in one second.

How is the energy of a photon calculated?

The energy of a photon can be calculated using the equation E = hf, where E is the energy of the photon, h is Planck's constant, and f is the frequency of the photon. This equation is known as the Planck-Einstein relation.

What units are used to measure the energy of a photon?

The energy of a photon is typically measured in electron volts (eV) or joules (J). One electron volt is equivalent to the amount of energy gained by an electron when it is accelerated through a potential difference of one volt.

How does the energy of a photon relate to the electromagnetic spectrum?

The energy of a photon is directly proportional to its frequency, which means that higher frequency photons have higher energy. This relationship is illustrated by the electromagnetic spectrum, which shows the different types of electromagnetic radiation organized by their frequencies and corresponding energies.

What are some everyday examples of photons and their energies?

Some everyday examples of photons and their energies include visible light, which has a range of frequencies and energies that allow us to see color, and radio waves, which have lower frequencies and energies that are used for communication. X-rays and gamma rays, which have much higher frequencies and energies, are used in medical imaging and radiation therapy.

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