Recent content by Zdub311

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    What Is the Intensity of Isotropic Sound Waves from a Loudspeaker?

    Homework Statement A loudspeaker emits sound isotropically with a power of 100db. Find the intensity in w/m at a distance of 20 from the source Homework Equations Intensity=power/area, For sound wave... power=ro*a*2pi^2*f^2*v*A^2, and I=2pi^2*ro*f^2*v*A^2. db=10log_10_(I/I_0_)...
  2. Z

    Artillery projectile motion problem

    1. Homework Statement An artillery shell is fired from the origin in the x direction(z is vertically upward) at an angle of 30degrees above the horizontal axis at a velocity of 3000 ft/s. after 2.5a the shell which weighs 100lb explodes into two pieces. The first piece to land weighs 30...
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    Projectile Problem: Solving an Artillery Shell Problem

    Although a 3000 level undergrad physics course. This question probably belongs in the beginner forum!
  4. Z

    Projectile Problem: Solving an Artillery Shell Problem

    Homework Statement An artillery shell is fired from the origin in the x direction(z is vertically upward) at an angle of 30degrees above the horizontal axis at a velocity of 3000 ft/s. after 2.5a the shell which weighs 100lb explodes into two pieces. The first piece to land weighs 30 lbs...