Remote controls use invisible light of frequency just below the visible range. this part of the electromagnetic spectrum is called

Which articulations allow for greatest range of motion?

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.)

Give one example to show that when substances are mixed, it may result in a chemical or a physical change depending on the conditions.