Recent content by bdh2991

  1. B

    Set theory and baye's theorem problem

    A computer consulting firm presently has bids out on three projects. Let Ai = {awarded project i}, for i = 1, 2, 3, and suppose that P(A1) = 0.22, P(A2) = 0.25, P(A3) = 0.29, P(A1 ∩ A2) = 0.07, P(A1 ∩ A3) = 0.09, P(A2 ∩ A3) = 0.05, P(A1 ∩ A2 ∩ A3) = 0.02. The question is to find the...
  2. B

    Engineering Using a SR flip-flop to make a particular circuit

    I think I actually figured it out but using a JK flip flop rather than only an SR flip- flop... Not sure how to fix the undefined issue with 1 - 1 going into the SR without using the JK...any suggestions?
  3. B

    Engineering Using a SR flip-flop to make a particular circuit

    Homework Statement A Null-Lobur flip-flop (NL flip-flop) behaves as follows: If N = 0, the flip-flop does not change state. If N = 1, the next state of the flip-flop is equal to the value of L. a) Derive the characteristic table for the NL flip-flop. b) show how an SR flip-flop can be...
  4. B

    Kinetic Energy rotational and translational conceptual question.

    ok so basically the rotational + translation in the rolling ball would equal the translational of the sliding block, however because the rolling ball is losing energy to friction the box would be faster?
  5. B

    Kinetic Energy rotational and translational conceptual question.

    But wouldn't that mean it has more kinetic energy therefore it would be moving faster?
  6. B

    Torque on a hammer conceptual question.

    Homework Statement If you are trying to loosen a stubborn screw from a piece of wood with a screwdriver and fail, should you find a screwdriver for which the handle is (a) longer or (b) fatter? Homework Equations \tau = r * F * sin(\theta) The Attempt at a Solution I guessed...
  7. B

    Kinetic Energy rotational and translational conceptual question.

    Homework Statement A ball rolls without slipping down incline A, starting from rest. At the same time, a box starts from rest and slides down incline B, which is identical to incline A except that it is frictionless. Which arrives at the bottom first? (a) The ball arrives first. (b) The...
  8. B

    Mass submerged in oil and scales problem

    Homework Statement A 1.02 kg beaker containing 1.98 kg of oil (density = 916.0 kg/m3) rests on a scale. A 1.98 kg block of iron is suspended from a spring scale and completely submerged in the oil. Determine the equilibrium readings of both scales. What does the top scale read...
  9. B

    Bouyant force with water and in equilibrium

    nvm...i complete forgot that d = m/v, therefor the force due to gravity is the same for mg or density*g*volume...sorry about that
  10. B

    Bouyant force with water and in equilibrium

    Homework Statement A cube of wood having an edge dimension of 20.9 cm and a density of 651 kg/m3 floats on water. what is the distance between the top of the cube to the water level? Homework Equations F = density*g*Volume The Attempt at a Solution I believe i have the right...
  11. B

    Show that this sequence satisfies the recurrence relation

    ok so changing the equation to that gives me: 5(3*3k-2 - 2*2k-2) - 6( 3k-2 - 2k-2) i can see how that gave me some like terms but multiplying through gives me: 15 * 3k-2 - 10 * 2k-2 - 6 * 3k-2 - 6 * 2k-2 i feel like that wasn't where you were leading me lol...i'm sorry, I'm not that...
  12. B

    Show that this sequence satisfies the recurrence relation

    This is what i tried doing at i stated above...after you plug them in i get 3k - 2k = 5( 3k-1 - 2k-1) - 6(3k-2 - 2k-2), I don't really understand what i can do with that algebraically...i must just be missing it...
  13. B

    Show that this sequence satisfies the recurrence relation

    Homework Statement Let d0, d1, d2,... be defined by the formula dn = 3n - 2n for all integers n ≥ 0. Show that this sequence satisfies the recurrence relation. dk = 5dk-1 - 6dk-2.Homework Equations The Attempt at a Solution I found that dk = 3k - 2k dk-1 = 3k-1 - 2k-1 dk-2 = 3k-2 - 2k-2...
  14. B

    Rotational kinetic energy / moment of inertia

    Homework Statement A thin, cylindrical rod = 27.0 cm long with a mass m = 1.20 kg has a ball of diameter d = 10.00 cm and mass M = 2.00 kg attached to one end. The arrangement is originally vertical and stationary, with the ball at the top as shown in the figure below. The combination is...
  15. B

    Energy and angular motion problem

    the block vertically would be falling at the same rate that the block on the table is moving...correct?
Back
Top