Question

Find the de Broglie wavelength of an electron with a speed of 0.95c. Take relativistic effects into account.

Answer #1

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.

(a) An electron has a de Broglie wavelength of 2 pm. Calculate
the relativistic velocity of the electron in terms of c.
(b) A beam of 1.9 eV electrons bombards a sample of hydrogen. If
a spectral line of the Balmer series is observed, calculate the
initial energy level, n-i of the electron.

A relativistic electron has a de Broglie wavelength of 646 fm (1
fm = 10−15 m). 1) Determine its velocity

Find the speed of the following objects given their de Broglie
wavelength:
a. An electron with a wavelength of 0.2 nm
b. A proton with a wavelength of 0.2 nm
c. A 200 g baseball with a wavelength of 0.2 nm (in m/s and
mi/hr)
d. Explain the differences.

1) How will the wavelength of de Broglie electron change if you
increase it
speed 3 times?
2) How much is the wavelength of de Broglie proton different from
the wavelength
where is the Broglie electron if they move at the same speed?
3) Will the wavelength of the particle change if it enters the
potential field?

An electron has a de Broglie wavelength of 215 nm, what is the
speed of the electron?

What is the de Broglie wavelength and speed of an electron
accelerated by a
a potential difference of 250 V?

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...

de Broglie wavelength of a 1.4 keV electron?
___ nm

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.

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