. Your little sister and her friend build treehouses and stretch a rope between them for sending messages. They hang a 1.4-kg mass on one end of the rope that passes over a pulley. The other end is tied to the second treehouse. When your sister plucks the rope, a wave propagates at 18 m/s. The girls deem this too slow; they want to increase the wave speed to 30 m/s. Your sister asks, What mass should I use? What do you reply?
weekly Assignment 10 https://session.masteringphysics.com/myct/assignmentPrintViewdispl... weekly Assignment 10 Due: 9:00pm on Monday, April 4, 2016 To understand how points are awarded, read the Grading Policy for this assignment. ± Fringes from Different Interfering Wavelengths Coherent light with wavelength 610 passes through two very narrow slits, and the interference pattern is observed on a screen a distance of 3.00 from the slits. The first-order bright fringe is a distance of 4.84 from the center of the central bright fringe. Part A For what wavelength of light will the first-order dark fringe (the first dark