Respuesta :
Answer:
a) Define these terms (wavelength, frequency, photon energy, speed of travel).
Wavelength: It is the distance between two consecutive valleys or crests on a wave.
Frequency: It is the number of crests or valleys that pass from one point in a determined interval of time.
Photon energy: The energy that a photon has, that energy will variate with the wavelength or frequency.
Speed of travel: It is the distance covered in a period of time by the propagation of a wave in a particular media.
b) Rank the four types of electromagnetic radiation in order of increasing wavelength, frequency, photon energy, and speed.
Increasing wavelength:
Microwaves
Visible
Ultraviolet
Gamma rays
Increasing frequency:
Gamma rays
Ultraviolet
Visible
Microwaves
Increasing photon energy:
Gamma rays
Ultraviolet
Visible
Microwaves
The speed will be the same for the four types of electromagnetic radiation, since the speed of a wave only depends in the media in which it propagates.
Explanation:
The electromagnetic spectrum is the distribution of radiation due to the different frequencies at which it radiates and its different intensities, that radiation is formed by electromagnetic waves, which are transverse waves formed by an electric field and a magnetic field perpendicular to it.
The distribution of the radiation in the electromagnetic spectrum can also be given in wavelengths, but it is more frequent to work with it at frequencies, the highest being that of gamma rays, followed by X-rays, ultraviolet rays and the visible region, and those of lower frequencies, which correspond to infrared, microwave and radio waves.
a) Define these terms (wavelength, frequency, photon energy, speed of travel).
Wavelength: It is the distance between two consecutive valleys or crests on a wave, and is related with the frequency by:
[tex]\lambda = \frac{v}{f}[/tex]
Where v and [tex]f[/tex] are the speed and frequency of the wave.
Frequency: It is the number of crests or valleys that pass from one point in a determine interval of time.
[tex]f = \frac{1}{T}[/tex]
Where T is the period.
The frequency can be related with the wavelength by means of the next equation:
[tex]f = \frac{v}{\lambda}[/tex]
Where v and [tex]\lambda[/tex] are the speed and wavelength of the wave.
Photon energy: The energy that a photon has, that energy will variate with the wavelength or frequency:
[tex]E = hf[/tex]
Where E is the energy of the photon, h is Planck’s constant and f is the frequency of the wave.
Since [tex]c = f\lambda[/tex] it gets:
[tex]E = \frac{hc}{\lambda}[/tex]
Where h is Planck’s constant, c is the speed of light and [tex]\lambda[/tex] is the wavelength of the wave.
Speed of travel: It is the distance covered in a period of time by the propagation of a wave in a particular media.
[tex]v = f\lambda[/tex]
Where [tex]f[/tex] and [tex]\lambda[/tex] are the frequency and wavelength of the wave.
Summary:
- when the frequency increase the wavelength decreases (inversely proportional).
- when the frequency increase the energy will increase too (directly proportional).
- when the energy increase the wavelength decreases (inversely proportional).
- the speed of a wave only depends on its media.
b) Rank the four types of electromagnetic radiation in order of increasing wavelength, frequency, photon energy, and speed.
Increasing wavelength:
Microwaves
Visible
Ultraviolet
Gamma rays
Increasing frequency:
Gamma rays
Ultraviolet
Visible
Microwaves
Increasing photon energy:
Gamma rays
ultraviolet
Visible
Microwaves
The speed will be the same for the four types of electromagnetic radiation, since the speed of a wave only depends in the media in which it propagates.
