Recent content by senatorarmstrong

  1. senatorarmstrong

    Calculating the Travel Time of High-Energy Particles Across Our Galaxy

    Homework Statement Our galaxy is about 10^5 light-years across, and the most energectic particles known have an energy of about 10^19 eV. How long would it take a proton with this energy to traverse the galaxy as measured from (a) the galaxy and (b) the particle? Homework Equations I...
  2. senatorarmstrong

    Courses Preparing for Classical Mechanics: Tips for Success

    Hello PF, I am taking classical mechanics this fall and I am horrified. I am just not sure if I have the mathematics background for the class. I am still finishing differential equations (about half way done) and I am almost done with calculus 3. The pre-requisite for the class is DE...
  3. senatorarmstrong

    How can I fill in the gaps in my understanding of physics?

    Hello everyone! I have found myself on this website before, but never made an account. I have finally decided it is time I join this community. I am a physics major currently working on pursuing my degree. I feel as if sometimes there is one small aspect of a problem that I don't understand. I...