1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Kipish [7]
2 years ago
5

What is the Electromagnetic Spectrum? in your own words

Physics
1 answer:
Inessa05 [86]2 years ago
5 0
The electromagnetic spectrum is the system of frequencies that show electromagnetic radiation, respective wavelengths, and photon energies. Some examples of frequencies found on the electromagnetic spectrum are radio waves, microwaves, infrared, optical, ultraviolet, X-rays, and gamma-rays.
You might be interested in
Ultraviolet light of wavelength 270 nm strikes a metal whose work function is 2.3 eV.What is the shortest de Broglie wavelength
soldier1979 [14.2K]

Answer:

The shortest de Broglie wavelength for the electrons that are produced as photoelectrons is 0.81 nm

Explanation:

Given;

wavelength of ultraviolet light, λ = 270 nm

work function of the metal, φ = 2.3 eV = 2.3 x 1.602 x 10⁻¹⁹ J = 3.685 x 10⁻¹⁹ J

The energy of the ultraviolet light is given by;

E = \frac{hc}{\lambda}\\\\E = \frac{(6.626*10^{-34} )(3*10^{8}) }{270*10^{-9} }\\\\E = 7.362 * 10^{-19} \ J

The energy of the incident light is related to kinetic energy of the electron and work function of the metal by the following equation;

E = φ  + K.E

K.E = E - φ

K.E = (7.362 x 10⁻¹⁹ J) - (3.685 x 10⁻¹⁹ J )

K.E = 3.677 x 10⁻¹⁹ J

K.E = ¹/₂mv²

mv² = 2K.E

velocity of the electron is given by;

V = \sqrt{\frac{2K.E}{m} }\\\\V =  \sqrt{\frac{2(3.677*10^{-19}) }{9.1*10^{-31} } }\\\\V = 8.99*10^{5}  \ m/s

the shortest de Broglie wavelength for the electrons is given by;

\lambda = \frac{h}{mv}\\ \\\lambda = \frac{6.626*10^{-34} }{(9.1*10^{-31})( 8.99*10^{5} )}\\\\\lambda = 8.10*10^{-10} \ m\\\\\lambda = 0.81 \ nm

Therefore, the shortest de Broglie wavelength for the electrons that are produced as photoelectrons is 0.81 nm

7 0
3 years ago
The _____ inside the stratosphere blocks ultraviolet radiation. apex
podryga [215]
The ozone layer that is inside the stratosphere blocks UV radiation.

The ozone layer contains high concentrations of ozone relative to other parts of the atmosphere. This was discovered by Charles Fabry and Henri Buisson who are both French Physicists. 

The ozone in the earth's stratosphere is created through ultraviolet light striking a group of ordinary oxygen molecules containing two oxygen atoms, subsequently splitting them into individual oxygen atoms and finally these said atomic oxygen then combines with unbroken O2 to create ozone (O3).
8 0
2 years ago
Read 2 more answers
During the process of mountain building, earthquakes sometimes occur along continental-continental convergent boundaries. Which
elena-14-01-66 [18.8K]

Answer:

The correct answer is The plates smash together with no subduction. I just took this on Edge. Glad I could help!

8 0
2 years ago
Read 2 more answers
The difference between a law and a theory is the diffrence between what and why . Explain
siniylev [52]

Answer:

A law is defined as a description or a statement given after an observed phenomenon. A theory is a simplification of certain observational data as to how and why it happened.

Explanation:

I hope this helped solve your question.

8 0
2 years ago
How much force is required to accelerate 3 kg at 3 m/sec^2
bogdanovich [222]

Answer:

F=?

a=3m/s2

m=3kg

F=ma=[3][3]=9 N

Explanation:

7 0
2 years ago
Other questions:
  • Which environmental change occurs quickly
    8·1 answer
  • An experiment is designed to test what color of light will activate a photoelectric cell the best. The photocell is set in a cir
    10·2 answers
  • If an object is neutrally buoyant (does not sink or float) in fresh water, the same object placed into salt water wouldA sink.B
    9·1 answer
  • Perfect Elastic Collisions
    10·1 answer
  • a horizontal force of 50N acts on a body of mass 20KG initially at rest and displaces it by striking it along the entire 20m pat
    10·1 answer
  • A controlled scientific investigation determines the effect of a(n) _______ variable in an experiment.
    8·1 answer
  • Explain how the forces need to change so the aeroplane can land
    8·1 answer
  • If you have a mass of 15kg , what is your weight on earth?
    11·1 answer
  • Describe the initial horizontal and vertical velocity of a horizontally launched projectile on Earth, as well as what happens to
    15·1 answer
  • To give an idea of sensitivity of the platypus's electric sense, how far from a 80nC n C point charge does the field have this m
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!