Recent content by gamer1319

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    What are the moment of inertia, angular speed, and angular kinetic energy?

    Homework Statement an electron (mass 9.11*10^-31kg) moves in a circular orbit around nucleus of mass 1.67*10^-27kg. if the radius of orbit is 5*10^-11 meters and the angular momentum is 1.05*10^-34 kg*m^2/s find moment of inertia angular speed angular kinetic energy Homework...
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    Calculating Final Angular Speed of Rotating Table

    Homework Statement a 40kg duck walks from the outside to the inside of a rotating circular table of mass 100kg. if the rotational intertia of the table is 250kg*m^2 and the duck moves from a radius of 2.5m to 1.5m, find the final angular speed of the table if it rotates at 2.0rad/sec at the...
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    Finding Velocity and Angular Speed of a Rolling Cylinder

    Homework Statement A solid cylinder of radius 20cm is released from a 2.5 high incline. If it rolls down without losing any energy to friction, find the cylinder's velocity at the bottom of the incline and the angular speed at the bottom of the incline. Homework Equations The...
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    Direction of Movement for Barbara

    Vectors question- CONFUSED! Blabla
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    Projectile Theory Homework: Understanding Velocity and Fall Time

    i think you misunderstood the question: can you figure out his HORIZONTAL DISTANCE traveled after the jump ( he jumped off horizontally) as [DISTANCEHORIZONTAL = VELOCITYHORIZONTAL * (Amount of time that he's freefalling)]
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    Projectile Theory Homework: Understanding Velocity and Fall Time

    Projectile Help [SIZE="2"]Moderator's note: two threads merged by Redbelly98 Homework Statement A person jumps horizontally from a certain height. (Vh = speed) Q - Can the horizontal distance (traveled AFTER the leap) be calculated as : DistanceHorizontal = VelocityHorizontal *...
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    Projectile Theory Homework: Understanding Velocity and Fall Time

    Homework Statement 1)A person jumps horizontally from a certain height. If there is no air friction, will his Vh be effected? 2) to calculate his fall time, can you use change in horizontal height = velocityhorizontal multiplied by time. (time is duration of fall) 3) if one wishes to find the...
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    How Does Relative Motion Affect What Barbara Sees While Rollerblading?

    Sorry, didn't know that. Here are my initial answers: Two friends, Barbara and Neil, are out rollerblading. With respect to the ground, Barbara is skating due south. Neil is in front of her and to her left. With respect to the ground, he is skating due west. (a) Does Barbara see him...
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    How Does Relative Motion Affect What Barbara Sees While Rollerblading?

    This is a practice question. If somebody could help me with this practice question, I'd really appreciate it. Two friends, Barbara and Neil, are out rollerblading. With respect to the ground, Barbara is skating due south. Neil is in front of her and to her left. With respect to the ground...