Recent content by Mr. Hiyasaki

  1. M

    Graphing a digit oscillating signal

    for example: Simulate the digital signal in microsoft excel: the signal oscillates at 100 hz and alternates between 0 and 5 volts with a duty cycle of 50% I have no idea why I have to do these sorts of graphs to be quite honest. I was given a lab where I had to construct a Pulse Width...
  2. M

    Graphing a digit oscillating signal

    How would I go about graphing a digtal oscillating signal? I don't quite understand what a pulse width is, or rather how to find it given only the oscillation in Hz and a duty cycle. I understand that the duty cycle is the ratio of the pulse width over the total period, but i don't understand...
  3. M

    Graphing a digit oscillating signal

    How would I go about graphing a digtal oscillating signal? I don't quite understand what a pulse width is, or rather how to find it given only the oscillation in Hz and a duty cycle. I understand that the duty cycle is the ratio of the pulse width over the total period, but i don't understand...
  4. M

    Help with simple resistor problem

    thanks a whole lot, i think i am starting to understand this stuff. I wish the problems were a little simplier then worked their way up, but I don't have that choice. THank again for the help. I have two more questions if someone wouldn't mind helping me out a bit with these as well For...
  5. M

    Help with simple resistor problem

    SEE POST 4 I am having problems solving these resistor problems and was wondering if anyone could help. Really what I think my problem is is that i don't know what to do if there are series and parallel resistors on the same circuit For attachment three The resistance of the...
  6. M

    How Does the Center of Mass Affect Problem Solving in Physics?

    edit: i was stupid the center of mass doesn't change for number four so it comes out to be r/2
  7. M

    Help with simple work / nrg conservation question

    i was checking over this and noticed that v_{f}^2 = v_{o}^2 + 2a delta x 2.55(m/s)^2 = 0 + 2 (5.88m/s^2) (.4m) is not valid so does that mean it is wrong? or am i just confused?
  8. M

    Help with simple work / nrg conservation question

    The question is "Two masses comprise an inertial system: the first, a 2 Kg mass which rests on a rough table top; then second, 5 Kg mass which hangs freely 0.4 m above the floor from an ideal pulley at the edge of the table top. The two masses are connected by an inextensible string run over...
  9. M

    How Do I Solve for Terminal Velocity Using Logs in My Air Resistance Lab?

    In this lab we dropped coffee filters from a given height (3 M) and want to determine their terminal velocity My problem is I don't know how to solve the log thing given. we have terminal velocity, V, in the formula Mg = bV^n which I change to V=(Mg/b)^(1/n) then to...
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