Muscle contractions change striation distances from 1.87 to 1.94 micrometers. These changes are measured by shining a beam of laser light with a wavelength of 650 nm onto a tank of freshwater containing glass catfish. The diffraction pattern is directed onto a screen that is 30cm behind the fish. Investigators measured the change in the location of the m=1 diffraction spot as the fish swam in front of the beam. What is the distance that the diffraction spot moved on the screen?

How would you place two electrons on a sphere of radius r so that the electrostatic potential energy is minimized. how would you place three electrons to solve the same problem.

When the displacement of a mass on a spring is 12a the half of the amplitude, what fraction of the mechanical energy is kinetic energy? at what displacement, as a fraction of a, is the mechanical energy half kinetic and half potential?

You are the coordinator for a program that is going to take place at night in a rectangular amphitheater in the mountains. you will have no access to any electricity, but you must be able to illuminate the entire grounds. you know the intensity of the light from a lantern varies inversely as the square of the distance from the lantern. suppose the intensity is 90 when the distance is 5 m. a. write an equation to model the situation. b. solve for the constant of variation. c. write the equation to model the situation using the constant () of variation. d. you have been given lanterns with 40 light intensity. use your equation to solve for the distance from the lantern. e. you need to illuminate 225 km. how many meters do you need to light? f. how many lanterns will you need?