A length of glass tubing is 10 cm long. What is its
length in inches to the nearest inch?

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 happens when the vapor pressure of a liquid is equal to the external pressure?

How does the strength of the electrostatic force between an electron and a proton compare to the strength of the gravitational force between them?