Question

Calculate the de Broglie wavelength of a ? - particle ejected from the nucleus of a radioactive element with a kinetic energy of 7.5 eV. What is the frequency of a photon with the same wavelength?

Answer #1

What is the kinetic energy in eV of an electron whose de Broglie
wavelength is 18 % of the wavelength of a photon having the energy
equal to electrons kinetic energy?
Answer in eV

If the De Broglie wavelength of an electron is equal to 450
nm calculate the velocity of the electron. Assume that the
electron's speed is non-relativistic.
Tries 0/10
If the kinetic energy of an electron is 170 eV,
calculate its De Broglie wavelength. For this non-relativistic
electron you must first calculate its velocity from the general
kinetic energy equation. Then you can find the De Broglie
wavelength of the electron.

What is (a) the wavelength of a 5.10-eV photon
and (b) the de Broglie wavelength of a 5.10-eV
electron?

What is (a) the wavelength of a 4.90-eV photon
and (b) the de Broglie wavelength of a 4.90-eV
electron?

A photon has a wavelength that is the same as the de Broglie
wavelength of an electron.
(a) How does the momentum of the photon, compare to the momentum of
the electron,
(b)How does the energy of the photon, compare to the total
energy of the electron

Calculate your De Broglie wavelength, calculate the De Broglie
wave length of a 5 MeV alpha particle. Compare your De Broglie
wavelength to the size of an automobile. Compare the alpha
particle's De Broglie wavelength to the size of an uranium atoms
diameter, which situation requires quantum mechanics?

The de Broglie wavelength of a quantum-mechanical particle with
momentum p is given by Y=h/p, where h is plancks constant. Use this
to show that Fermi energy for a free Fermi gas is, with a numerical
factor, equal to the kinetic energy of a particle whose de Broglie
wavelength is equal to the average interparticle spacing in the
gas.

Calculate the linear momentum, and the de Broglie wavelength
of:
a) a 0.75 kg bullet that is fired at a speed of 100 m /
s,
b) a non-relativistic electron with a kinetic energy of 2.0
eV, and
c) a relativistic electron with a kinetic energy of 208
keV.
!!!! # !! Remember that for relativistic particles: ? = ? ? +
? "? and ? = ?? = ? + ?" ?, the mass
of the electron is 9.11...

Which choice below is correct about the de Broglie
wavelength?
a. The de Broglie wavelength provides a reasonable approximation
of when quantum effects become important.
b. Electrons exhibit a de Broglie wavelength, but protons do
not.
c. The larger the mass of a particle, the longer its de Broglie
wavelength will be.
d. Shorter de Broglie wavelengths correspond to particles with
lower speeds.

If the de Broglie wavelength of an electron is 258 nm , what is
the kinetic energy of this electron?

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