Describe how voltage changes from where power is generated to where it is consumed. Why do you think the power grid incorporates voltage changes? Please help fast!

If the chemical properties of a substance remain unchanged and appearance or shape of a substance changes it is called a ?

Find the dimensions and area of the largest rectangle that can be inscribed in the upper half of the ellipse. (give your answers in terms of a and b. enter the dimensions as a comma-separated list.)

What is the single most important equation in all of physics?