Question

15)

Calculate the de Broglie wavelength of a proton moving at 2.33 ?
10^{4} m/s and 1.99 ? 10^{8} m/s.

(a) 2.33 ? 10^{4} m/s

m

(b) 1.99 ? 10^{8} m/s

m

Answer #1

Calculate the de Broglie wavelength of a Helium atom moving at a
speed of 50 m/s.

Compare the de Broglie wavelength of a 0.015-kg ball moving at
40 m/s to that of an electron which has a speed of
0.0073c. Given: mass of electron = 9.11 x
10-31kg, speed of light = c = 3 x 108
m/s.

Calculate the de Broglie wavelength for a proton with a velocity
3.98% of the speed of light..

Calculate the de Broglie wavelength of helium nucleus (mass = 6.64
x 10^-27 kg) moving at a velocity of 2.54 x 10^7 m/s
A. 6.57 x 10^-14 m
B. 3.96 x 10^-15 m
C. 8.68 x 10^-59 m
D. 4.55 x 10^8
E. 8.64 x 10^-16

If the de Broglie wavelength of a proton is 70.0 fm,
(a) what is the speed of the proton and
(b) through what electric potential would the
proton have to be accelerated to acquire this speed?

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?

A. The mass of an electron is 9.11×10−31 kg. If the de Broglie
wavelength for an electron in a hydrogen atom is 3.31×10−10 m, how
fast is the electron moving relative to the speed of light? The
speed of light is 3.00×108 m/s. Calculate your answer as a
percentage.The solution was .732% B. The mass of a golf ball is
45.9 g . If it leaves the tee with a speed of 70.0 m/s , what is
its corresponding wavelength?...

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.

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.

1. a) What is the de Broglie wavelength of an electron that is
accelerated through an electrical potential difference of 20 volts?
b) What is the de Broglie wavelength of a proton that is
accelerated through an electrical potential difference of 20
volts?

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