Recent content by Vickyvicksss

  1. V

    When to use destructive or constructive equation for young's DS exp.

    Helpful link! thank you :)
  2. V

    When to use destructive or constructive equation for young's DS exp.

    Homework Statement Light of wavelength 646 nm passes through a slit 5.50 × 10^-6 m wide and falls on a screen that is 2.01 m away. What is the distance on the screen from the center of the central bright fringe to the third dark fringe on either side? Homework Equations destructive...
  3. V

    Resistivity and Ohm's Law question

    LOL! CRAP! i knew that~ :) Thank you :3 I was going insane for a bit.
  4. V

    Resistivity and Ohm's Law question

    Homework Statement A long wire connected to the terminals of a 12V battery has 6.4 x 1019 electrons passing a cross section of wire each second. calculate it's resistance. answer is 1.2ΩHomework Equations q = ne q = IE R=ρ L/AThe Attempt at a Solution V= 12v n= 6.4 x 1019 electrons R=? First...
  5. V

    A couple of gravitational problems (kelper's third law)

    Homework Statement A satellite is to be placed in orbit about the Earth at an altitude of 1.6 x 10 6m. What will be its period of motion? The answer is 7.2x 103s 2. The attempt at a solution Using kelper's third law. R3 / T2 = R3 / T2 Radius of satellite: 6.38 x 106 + 1.6 x 106...