Chat with us, powered by LiveChat 7 question physics hw | Abc Paper

answer the ten questions for this hw. please

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1. Find the energy (in eV) of a photon with a frequency of ​7.6 ​✕​ 10​16​ Hz.
2. Things around you are emitting infrared radiation that includes the wavelength ​1.05
10​-5​ m. What is the energy of these IR photons?
3. In what part of the EM spectrum would a photon of energy ​5.4 ​✕​ 10​
J be
found?(pick the ones that apply)
Radio wave, microwave, infrared, visible, ultraviolet, gamma ray
What is its energy in electronvolts?
4. In a typical electron microscope, the momentum of each electron is about ​1.4
kg-m/s. What is the de Broglie wavelength of the electrons?
5. A hydrogen atom initially in the ​n​ = ​2​ level emits a photon and ends up in the ground
(a) What is the energy of the emitted photon?
(b) If this atom then absorbs a second photon and returns to the ​n​ = 2
​ ​ state, what
must the energy of this photon be?
6. In a ​helium-neon​ laser, find the energy difference between the two levels involved in the
production of ​green​ light of wavelength ​543.5​ nm by this system.

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