First case: We know that pyramid $VABC$ has $2$ congruent lateral sides. We show that the intersection of the planes is a line.We can observe that the planes have all in common point $V$, we need to find another point that $\in$ all of these planes to shore ...
The objects near the surface of a planet falls towards the planet due to the gravitational pull of the planet. The motion of an object under the influence of the gravitational force can be described by using the following eq...
The largest point of vulnerability among Trump’s 2016 voters is his complete failure to clean up the corrupt nature of DC politics. He has not Drained the Swamp. He has further infested it with his own version of swamp creatures (Cohen, Stone, Manafort, Pecker). His continued support comes...
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The uncertainty of the lens mass can be substantially reduced if it is determined from the lens proper motion obtained from astrometric measurements of the source image centroid shifts, \\vdelta\\vtheta_c \\vdelta\\vtheta_c , by using hi... C Han,K Chang - 《Physics》 被引量: 1发表...
Surprisingly, gravity not only can get weakerin the near future, it can even become repulsive; or equivalently, the gravitational potential may f l ip its sign. We showthis remark by using one of the simplest phenomenological model we can imagine for dark energy.Keywords: dark energy, ...
Matter doesn’t need to be made of finite-sized particles to wind up creating the macroscopic Universe we know and love. The reactor builder states that: “The background is carbon adhesive tape that is commonly used for SEM. Yes, the shiny particles are metal ...
in gravity the potential energy is always negative so combining any two sources can only ever decrease the gravitational potential energy. the only way for gravitational potential energy to cancel would be if negative matter existed. in both cases the force is the gradient of the potential ...