Exercise (1) A laser used in eye surgery to fuse detached retinas produces radiation with a wavelength of 640.0 nm. Calculate the frequency of this radiation? Exercise (2) An FM radio station broadcasts electromagnetic radiation at a frequency of 103.4 MHz (megahertz; MHz = 10 s ). Calculate the wavelength of this radiation.

Review I Const The iodine molecule can be photodissociated into iodine atoms in the gas phase with light of wavelengths shorter than about 735 nm . A 110.0 mL glass tube contains 56.4 mtorr of gaseous iodine at 17.0 °C. Part A What minimum amount of light energy must be absorbed by the iodine in the tube to dissociate 11.0% of the molecules? Express your answer with the appropriate units. ? Value Units Emin Submit Request Answer

Exercise 7.71 An electron in the n=7 level of the hydrogen atoi rolaxes to a lower energy level emitting light of 2166 nm. Part A What is the value of n for the level to which the electron relaxed? Express your answer as an integer. Vol AzO Submit Request Answer Provide Feedback O Type here to search

Question 28 What is the energy of a photon with a frequency of 8.26 x 10¹4 Hz? Enter your answer with units to the correct number of significant figures. To enter your answer in scientific notation use "E". Example: 4.51 x 10-8 J = [4.51E-8 J]