An industrial physicist wishes to specify the properties of a concave makeup mirror, which is supposed to provide an upright and enlarged image of the user's face. the physicist wants a magnification factor of two, and he assumes that the user's face will be 28 cm in front of the mirror. what radius of curvature should be specified (in cm) for the fabrication of these mirrors?

The vapour pressure of benzene is 53.3 kpa at 60.6 °c, but it fell to 51.5 kpa when 19.0 g of a non-volatile organic compound was dissolved in 500 g of benzene. calculate the molar mass of the compound.

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

Avertical clean glass piezometer tube has an inside diameter of d = 1 mm and is used to measure pressure in a horizontal pipe carrying water as shown. due to pressure in the pipe, the water at 20c rises into the tube to a height h. if the water pressure in the pipe is p = 500 pa gauge, estimate the height h: (a) without considering surface tension (b) with surface tension (capillary) effects. the contact angle  can be assumed at 30 deg