Average Velocity is calculated using the change in displacement over a period of time. The change in displacement is calculated as the initial displacement subtracted from the final displacement, that quantity divided by the initial time subtracted from the final time.
read moreA gravitational field is a model used to explain the influences that a massive body extends into the space around itself, producing a gravitational force on another massive body. Thus, a gravitational field is used to explain gravitational phenomena, and is measured…
read moreDerivation of the Friedmann Equations[1] from the Newtonian First Derivative of the Scale Factor a is the scale factor, not acceleration. Notice it is not expressed as a vector. The scale factor is scalar; It has no direction, only magnitude. It describes the instantaneous…
read moreA first order differential equation is a differential equation that contains only first derivatives. In other words, it does not contain any derivatives higher than the first derivative, such as second derivatives, third derivatives, etc.
read moreEntropy is the unavailability of a system’s thermal energy for conversion into mechanical work.
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