(a) Calculate the wavelength of light in vacuum that has a frequency of 5.06 x 10¹8 Hz. nm (b) What is its wavelength in flint glass? nm (c) Calculate the energy of one photon of such light in vacuum. Express the answer in electron volts. eV (d) Does the energy of the photon change when it enters the flint glass? O The energy of the photon changes. O The energy of the photon does not change. Explain.

How much energy (in eV) does a photon of red light (1 = 700 nm) have? (h=6.63 1034 Jxs, c=3.00 10³ m/s, 1 eV = 1.60 10-19 J, and 1 nm = 109 m) -9 3.11 eV 2.26 eV 1.78 eV 1.24 eV..!

(a) What is the energy in joules of an x-ray photon with wavelength 3.08 x 10-10 m? (b) Convert the energy to electron volts. kev (c) If more penetrating x-rays are desired, should the wavelength be increased or decreased? O increased decreased (d) Should the frequency be increased or decreased? increased O decreased

A) Astronomers measure the peak wavelength of a nearby star to be 410 nm. What is the star's temperature? B) How much energy does a single photon of light have at this wavelength? C) An electron bound in an unknown metal requires 1.45E-19 ] of energy under the photoelectric effect to become free of the metal. How much kinetic energy would it have if struck by the photon froft part (b)? D) What is the final speed of the elctron from part (c)?

Recall that the threshold frequency (νthreshold) for a metal is related it the metal's work function (Φ) by Eminimum= Φ = hνthreshold.  For a particular metal, Φ is 7.70×10-19 J. What is the longest wavelength of electromagnetic radiation that can eject an electron from the surface of a piece of the metal?  In nm   If light has a wavelength of 635 nm, what is the energy of this light expressed with units of kJ/mol?     A beam of radiation has an energy of 2.95×102 kJ/mol. What is the wavelength of this light? In nm

Metro by T-Mobile Light that has a frequency of about 5.20 x 1014 Hz (a wavelength of about 578 nm energy in joules of the photons associated with this light? Need Help? Read It [-/2 Points] Need Help? Photons of a certain ultraviolet light have an energy of 6.34 × 10-1⁹ J. (a) What is the frequency of this UV light? Hz [-/2 Points] (b) Use λ = c/f to calculate its wavelength in nanometers (nm). nm DETAILS Need Help? Submit Answer MY NOTES [1/1 Points] Read It webassign.net DETAILS Photons of a certain infrared light have an energy of 1.78 x 10-1⁹ J. (a) What is the frequency of this IR light? Hz SHIPPS14 9.E.003. MY NOTES (b) Use λ = c/f to calculate its wavelength in nanometers. nm Read It DETAILS SHIPPS14 9.E.004. MY NOTES PREVIOUS ANSWERS ASK YOUR TEACHER ASK YO PRACTICE ANOTHER ASK YO SHIPPS14 9.E.005.

How fast must an electron be moving if all its kinetic energy is lost to a single x-ray photon with the following characteristics? (a) The photon has a wavelength of 3.55 x 10-8 m near the high end of the x-ray electromagnetic spectrum. Your response differs significantly from the correct answer. Rework your solution from the beginning and check each step carefully.c (b) The photon has a wavelength of 3.55 x 10-13 m near the low end of the x-ray electromagnetic spectrum,