Recent content by elizabethrae

  1. E

    Finding current and Power delivered to Resistors

    I'm still kinda lost as to how to start it.. we've learned the node and volatge laws and I think we are supposed to use them but I am not sure how. I don't have any values for current so I can't really use the node law, and what significance is V1+V2-V=0? I'm still just confused :S
  2. E

    Finding current and Power delivered to Resistors

    Homework Statement In the figure below, find the following. (Let E1 = 26.0 V, E2 = 13.0 V, and R = 9.0 Ω.) (attachment) (a) the current in each resistor I1 = I2 = I3 = (b) the power delivered to each resistor P1 = P2 = P3 = Homework Equations V=IR...
  3. E

    Determine the kinetic energy of the electron as it leaves the electron gun

    Homework Statement In an electron microscope, there is an electron gun that contains two charged metallic plates 2.75 cm apart. An electric force accelerates each electron in the beam from rest to 8.90% of the speed of light over this distance. (Ignore the effects of relativity in your...