Recent content by FlyDoc

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    Undergrad Rotational Kinetic Energy discrepancy

    yes, disk beats hoop.
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    Undergrad Rotational Kinetic Energy discrepancy

    I was going over the rolling disk versus rolling hoop problem, in which the hoop has more Kr due to greater I and therefore smaller Kt and v. I know this can be algebraically proved with two unique expressions for V that don't involve omega. The question in class that came up concerns torque. If...
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    • Energy Kinetic Kinetic energy Rotational Rotational kinetic energy
    • Replies: 3
    • Forum: Mechanics
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    UCM from AP B Exam (1977 B2) : Confused with solution to #3

    I've attached the question and college board solution
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    UCM from AP B Exam (1977 B2) : Confused with solution to #3

    Homework Statement...
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    What is the final temperature of the mixture?

    Homework Statement 10 g of water from a water ice mixture (0 degrees C) is added to100 g of water at 20 degrees celsius. what is the final temperature of the mixture? C of water =1 kcal/kg*C Latent Heat of Fusion of water=79.7 kcal/kg Homework Equations Q=mC(Tf-Ti) Q=mL The Attempt...