Recent content by chipsdeluxe

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    Calculating Charged Object Mass and Attraction Force

    Coulomb's Laws--> Please help! 1. Object A is metallic and electrically neutral. It is charged by induction so that it acquires a charge of -2.9 x 10-6 C. Object B is identical to object A and is also electrically neutral. It is charged by induction so that it acquires a charge of +2.4 x 10-6...
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    How Does Bending Knees Reduce Impact Force During a Jump?

    When jumping straight down, you can be seriously injured if you land stiff-legged. One way to avoid injury is to bend your knees upon landing to reduce the force of the impact. A 66.9-kg man just before contact with the ground has a speed of 4.22 m/s. (a) In a stiff-legged landing he comes to a...
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    Solving Work and Energy Problems

    thanks again for the help
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    Solving Work and Energy Problems

    oh,i forgot the mass. i usually don't include the mass because they have have it and i just cancel it out. thanks for the help
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    Solving Work and Energy Problems

    thanks for the help guys but I'm still having a little troble 1. A 50.3-g golf ball is driven from the tee with an initial speed of 40.6 m/s and rises to a height of 29.9 m. (a) Neglect air resistance and determine the kinetic energy of the ball at its highest point. (b) What is its speed when...
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    Solving Work and Energy Problems

    1.A 50.3-g golf ball is driven from the tee with an initial speed of 40.6 m/s and rises to a height of 29.9 m. (a) Neglect air resistance and determine the kinetic energy of the ball at its highest point. (b) What is its speed when it is 6.17 m below its highest point? a. KE=1/2mv^2 i used...
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    How Do I Solve These Complex Newton's Laws Problems?

    can someone please help me with these problems? I'm completely lost. 1. Synchronous communications satellites are placed in a circular orbit that is 2.32 x 107 m above the surface of the earth. What is the magnitude of the acceleration due to gravity at this distance? 2. A woman stands on...
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    Help with Physics Problems: Elevator Acceleration & Gravity

    i suck at physics! can someone please help me with some physics problems? 1. A woman stands on a scale in a moving elevator. Her mass is 62.2 kg, and the combined mass of the elevator and scale is an additional 836 kg. Starting from rest, the elevator accelerates upward. During the...