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Question 17 1 pts Calculate the minimum wavelength of light (in nm) able to eject an...
Question 17 5 pts Light with a wavelength of 145 nm is shined on to the surface of platinum metal. What is the maximum speed of the ejected photoelectrons? The work function of platinum is 6.35 eV. 7.15E5 m/s O 6.32E5 m/s O 4.35E4 m/s 08.83E5 m/s O 0m/s. No photoelectrons are ejected.
The minimum frequency of light needed to eject electrons from a metal is called the threshold frequency, Vo. Find the minimum energy needed to eject electrons from a metal with a threshold frequency of 3.79 x 1014 -! Eo 25.11 x10-20 J With what maximum kinetic energy will electrons be ejected when this metal is exposed to light with a wavelength of 245 nm? 56.025 x10-19 -electron Incorrect
Light with a wavelength of 145 nm is shined on to the surface of platinum metal. What is the maximum speed of the ejected photoelectrons? The work function of platinum is 6.35 eV. o 7.15E5 m/s O 6.32E5 m/s O 4.35E4 m/s O 8.83E5 m/s m/s. No photoelectrons are ejected.
Light with a wavelength of 145 nm is shined on to the surface of platinum metal. What is the maximum speed of the ejected photoelectrons? The work function of platinum is 6.35 eV. O 7.15E5 m/s O 6.32E5 m/s 0 4.35E4 m/s O 8.83E5 m/s Om/s. No photoelectrons are ejected.
Be sure to answer all parts. Calculate the wavelength (in nm) of light with energy 1.71 × 10−20 J per photon.m For light of wavelength 450 nm, calculate the number of photons per joule. photons/J Enter your answer in scientific notation. Determine the binding energy (in eV) of a metal if the kinetic energy possessed by an ejected electron (using one of the photons with wavelength 450 nm) is 2.38 × 10−19 J.
Light with a wavelength of 145 nm is shined on to the surface of platinum metal. What is the maximum speed of the ejected photoelectrons? The work function of platinum is 6.35 eV. 7.15E5 m/s 6.32E5 m/s 4.35E4 m/s 8.83E5 m/s O m/s. No photoelectrons are ejected.
Light with a wavelength of 145 nm is shined on to the surface of platinum metal. What is the maximum speed of the ejected photoelectrons? The work function of platinum is 6.35 eV. 7.15E5 m/s 6.32E5 m/s 4.35E4 m/s 8.83E5 m/s O m/s. No photoelectrons are ejected.
Light with a wavelength of 145 nm is shined on to the surface of platinum metal. What is the maximum speed of the ejected photoelectrons? The work function of platinum is 6.35 eV. 7.15E5 m/s 6.32E5 m/s 4.35E4 m/s 8.83E5 m/s O m/s. No photoelectrons are ejected.
show all wrk Show your works and units for full credits 1. If the wavelength of a red light photon in vacuum is a = 680 nm, what is the energy of the photon in units of eV? (1 eV = 1.6 x 10-19 and Planck constanth 6.63 x 104 ) E- 2. What is the wavelength of a laser light beam that has the photon energy of 3.12 x 10-20 ? 2 3. If an electron moves a speed...
Use the Bohr model to find the second longest wavelength of light in the Lyman series for a doubly- ionized Li atom (Z = 3). Recall that the Lyman series corresponds to transitions to the ground state (n = 1). 13.5 nm 117 nm 73.0 nm 11.4 nm 209 nm Question 17 5 pts Light with a wavelength of 145 nm is shined on to the surface of platinum metal. What is the maximum speed of the ejected photoelectrons? The...