Recent content by Combine

  1. C

    Calculating distance of an electron moving between 2 plates

    Well it only kinda helped, I am still unsure if that is the answer. eV = 1/2mv^2 1.602 x 10^-16 = 4.555 x x10^-31V^2 v = 1.9 x 10^7 t = 0.15/1.9 x 10^7 t = 7.0 x 10^-9 d = V1t + 1/2at^2 d = 0 + 1/2(3.52 x 10^14)(7.0 x 10^-9) d = 0.008624 The answer makes logical sense, because...
  2. C

    Calculating distance of an electron moving between 2 plates

    Homework Statement Electrons are accelerated from REST by a potential difference of 1.0 x 10^3 volts They pass midway between two flat parallel plates 0.15m long and 0.030m apart. The electric field between the plates has a magnitude of 2.0 x 10^3 N/C. Determine how far an electron will be...
  3. C

    Problems with velocity/acceleration involving clock arm

    bump (come on I need lots of help!)
  4. C

    Problems with velocity/acceleration involving clock arm

    I'm still pretty confused on how to do it :/
  5. C

    Problems with velocity/acceleration involving clock arm

    the only difference I really see would be that a velocity is a vector while speed is a scalar.
  6. C

    Problems with velocity/acceleration involving clock arm

    Homework Statement A traditional watch has a second hand 2.0 cm long, from centre to tip a. what is the speed of the tip of the second hand? b. What is the velocity of the tip at 20s? 40s? and 60s? c. What is it's change in velocity between 15s and 30s? d. What is it's average...
  7. C

    Need universal Gravitation help

    Never mind my teacher answered the question for me (after several rather painful hours of waiting) we just have to make the equation nothing special, Fg = 6G M1 * M2 / d and he also explained to me what the 6 was... I am such an idiot >.< thanks for the help though
  8. C

    Need universal Gravitation help

    there is no mass specified it just says M1 and M2 and distance is just represented by d
  9. C

    Need universal Gravitation help

    According to my sheet, it's just simply m1 and m2, there are no mass representing them, I think you just have to write the final equation
  10. C

    Need universal Gravitation help

    Kinda, I still don't understand where the 2 in fG = 2G M1 * M2/D^2 or the 6 in fG = 6G M1 * M2/D^2 come from
  11. C

    Need universal Gravitation help

    Homework Statement what is the magnitude of Gravitational force for the following picture(s) (attached to forum) Homework Equations Fg = G M*M/D^2 The Attempt at a Solution I tried to do some of them I know the equation for the second one is fG = 2G M*M/D^2 and for the third one...
  12. C

    How Is Average Acceleration Calculated for an Arrow on a Bow?

    ya it should be, according to logic I guess lol just I've been having a lot of trouble trying to figure out the average acceleration
  13. C

    How Is Average Acceleration Calculated for an Arrow on a Bow?

    Homework Statement I will just try to post the whole questions, maybe my idiot eyes missed something... an arrow is accelerated for a displacement of 75cm [fwd] while it is on the bow, if the arrow leaves the bow at a velocity of 75m/s [fwd] what is it's average acceleration while it's on...