Recent content by sparky968

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    High School How would I calculate water pressure in a vertical column?

    Water weighs 62.4 pounds per cubic foot here on earth. There are 1728 cubic inches in a cubic foot. If you stack all 1728 cubes on top of each other the bottom cube would have 62.4 psi. 1728 divided by 12 inches per foot, then divided by 62.4 is approx. 2.3, so every foot of water increases the...
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    Undergrad Question about energy, can't create/destroy etc

    the energy created by tidal forces There are several ways we capture energy by tides and convert it to electrical energy. If energy can't be created nor destroyed, where does the energy come from that we are continually gaining from tidal forces. Does the gap between the Earth and moon narrow...
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    Undergrad Solving Time Dilation Question from Simply Einstein

    a shot at the why I don't understand the math but here's my try at the why. Matter and energy are interchangable. Whatever the form, both need representation. To make this clearer, suppose you have a grid in front of you. Horizontal movement is through space and vertical movement through time...