Recent content by alfredo24pr

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    Resistance Circuit Homework: Solving for Total Resistance

    Ok, I figured out the middle ones and you explained the last one. How do I start with the first question: "What potential difference must be applied to the external terminals?"
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    Resistance Circuit Homework: Solving for Total Resistance

    Homework Statement http://i1103.photobucket.com/albums/g480/Alfredo24PR/physicssucks.jpg" Homework Equations V=IR The Attempt at a Solution I tried adding the resistance: 1/8 + 1/ (6+5+10) = 1/8 + 1/21 = 0.1726 1/0.1726 = 5.793 ohm
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    Cutting Wires in a Circuit of Light Bulbs

    Yes. Lightbulb D
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    Cutting Wires in a Circuit of Light Bulbs

    Homework Statement Attached in picture Homework Equations N/A The Attempt at a Solution for What will happen if you cut the wire at position B? I think The light bulb will become dimmer, but not go off. Am I correct? for What will happen if you cut the wire at position D...
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    Charge in Metals (Supposed to be easy)

    Homework Statement There are 4 identical metal balls: J, K, L, M. Initially, J has charge QJi = 0e, L has charge QLi = +42e, and M has charge QMi = -48e. The ball J touches the ball K, and they separate. Then, the ball J touches the ball L, and they separate. Then, the ball J touches the...
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    Guide to Filling a Table of Animals: Appendix Section Explained

    It is not a problem, but I need to fill a table of animals and there is a section that says appendix. How do I fill it in? Is it a yes or no question?
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    Bat Hitting Ball: Find Speed After Collision

    uhh.. m1v1 = m1(2.3) m2v2 = m2(2.3) 1/2mvi2 = 1/2m(2.3)2 and then i substitute m1(2.3) + m2(2.3) = m1vif + m2vif 1/2mvi2 + 0 = 1/2mvf2??
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    Bat Hitting Ball: Find Speed After Collision

    so m2 / m1 is negligible therefore I can write it out as 0? I still do not understand how to work with both equations.
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    Bat Hitting Ball: Find Speed After Collision

    m1v1i + m2v2i = m1v1f + m2v2f and 1/2mvi2 + mghi = 1/2mvf2 + mghf
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    Bat Hitting Ball: Find Speed After Collision

    umm.. I do not understand. I know that I have to relate to v used in momentum to the v in kinetic energy :confused:
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    Bat Hitting Ball: Find Speed After Collision

    hi tiny tim..so that means I have to relate kinetic energy?
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    Bat Hitting Ball: Find Speed After Collision

    Homework Statement A ball and bat, approach one another each with the same speed of 2.30 m/s, collide. Find the speed of the ball after the collision. (Assume the mass of the bat is much much larger than the mass of the ball and that this is an elastic collision with no rotational motion)...
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    Solving Ramp with Friction Homework Problem

    mg cos 30.3?
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    Solving Ramp with Friction Homework Problem

    The professor told me that it is the same coefficient for both
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    Solving Ramp with Friction Homework Problem

    I cannot get an answer. How do I use friction?