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Homework #4 - 100 points
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Question 4.2 (write out answer in words!) - 10 points
Question 4.9 (write out answer in words!) - 10 points


Download and install the “Making Waves” Java Applet from https://phet.colorado.edu/en/simulation/fourier. Use the “Discrete to Continuous” program to generate a wave packet with a k-width of ~2 rad/m and x-width of ~0.5 m. Attach a screen shot to your homework. Note that you may have to install Java to run the applet. - 20 points  


Show all work on the following mathematical problems: 

Problem 4.3 - 20 points [Don’t forget about relativity]

Problem 4.8 - 10 points

Problem 4.17 - 10 points

Problem 4.24 - 20 points