Recent content by rtsphysics

  1. R

    Kinematics - Constant Deceleration

    Homework Statement To stop a car, you require first a certain reaction time to begin braking; then the car slows down under the constant braking deceleration. Suppose that the total distance moved by your car during these two phases is 186 ft when its initial speed is 50 mi/hr, and 80 ft when...
  2. R

    Ratio of Sun's diameter to Moon's

    Homework Statement During a total solar eclipse, your view of the Sun is almost exactly replaced by your view of the moon. Assuming that the distance from you to the sun is 400 times the distance from you to the moon, find the ratio of the Sun's diameter to the moon's diameter. Homework...
  3. R

    Kinetic/Mechanical Energy -> Electricity?

    Oops! I just realized I didn't make myself clear...Sorry! Well, I was thinking along the lines of biomechanical engineering, maybe harvesting energy from walking. So in that perspective, it's more like harvesting the kinetic energy and mechanical energy from walking or any other type of...
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    Kinetic/Mechanical Energy -> Electricity?

    Kinetic/Mechanical Energy ----> Electricity? Hi, I am new to these forums (always the cliche phrase of a new person!:-p), and i was wondering about a certain question. What are the most efficient mechanisms of converting kinetic or mechanical energy into electricity? I tried to do some stuff...
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