Recent content by einstor

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    Could the linear velocity at an infinite distance exceed the speed of light?

    from most post that I read above, so is the law of relativity does not work on irrelevant systems?
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    Could the linear velocity at an infinite distance exceed the speed of light?

    Suppose I have a stick whose length is infinite, then the stick was rotated at one end. Despite playing with a small angular velocity, but should have a linear speed of the other end of the stick (which is at infinite distance) will be very high considering the formula of linear velocity =...
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    Where Does Energy Go When You Push a Moving Truck?

    I am still confused about this. say, we are in a constant moving truck, we pushed the back of the truck, so we provide the force F on the walls of the truck, towards the rear. but the truck moving with constant velocity and has traveled a distance of say x. we do the work according to an...
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    Gravitational Force at the Center of the Earth?

    consider this, since r>R (radius of earth) r reducing causes magnitude of force increasing, but if r<R when r reduces so the total mass of the Earth included to attract reduces too, until r=0 we'll get the total mass of the Earth covered is 0, so the total force is 0 (analogy of Gauss Law in...
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