An electron is in a one dimensional well of length L=2nm, with zero potential inside and infinite potential at the walls. If the electron jumps from energy level n=4 to level n=2 what is the frequency of light emitted? Group of answer choices 3.4 x1015 Hz 6.8 x1014 Hz 3.39 x1014 Hz none of the above 6.8 x1013 Hz
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An electron is in a one dimensional well of length L=2nm, with zero potential inside and infinite potential at the walls. If the electron jumps from energy level n=4 to level n=2 what is the frequency of light emitted?
3.4 x1015 Hz
6.8 x1014 Hz
3.39 x1014 Hz
6.8 x1013 Hz
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- If the wavelength of an electron is 4.58 ✕ 10−7 m, how fast is it moving? km/s(b) If the electron has a speed equal to 3.80 ✕ 106 m/s, what is its wavelength? mThe nucleus of a typical atom is 5.0 fm (1 fm = 10-15 m) in diameter. A very simple model of the nucleus is a onedimensional box in which protons are confined. Estimate the energy of a proton in the nucleus by finding the first three allowed energies of a proton in a 5.0-fm-long box.Electrons striking the back of a conventional TV screen travel at a speed of about 2.7 ✕ 107 m/s. What is their de Broglie wavelength (in nm)?
- A particle of matter is moving with a kinetic energy of 7.53 eV. Its de Broglie wavelength is 2.85 x 10^-12 m. What is the mass of the particle?In a TV tube an electric potential difference accelerates electrons from a rest position towards a screen. Just before reaching the screen, the electrons have a wavelength of 1.2×10−11m1.2×10-11m. Determine the kinetic energy of the electrons just before they reach the screen. Your final answer should have units of eV.An X-ray photon has a wavelength of 0.01 nm. What is the de Broglie wavelength of an electron that has the same energy as the X-ray photon? O 1.5 X 10-3 nm O 3.0 X 10-3 nm O 3.5 X 10-3 nm O 4.0 X 10-3 nm O 2.0 X 10-3 nm O 2.5 X 10-3 nm
- The work function of a metal is is 2.04 e V. What will be the frequency of light required to eject electrons? * (2 Points) 3.2 x10 ^15 Hz O 4.2 x10 ^15 Hz O 3.2 x10 ^15 Hz 4.9 x19 ^14 HzDuring a certain experiment, the de Broglie wavelength of an electron is 610 nm = 6.1 x 10- m, which is the same as the wavelength of orange light. How fast (in m/s) is the electron moving? m/s