Aconcave makeup mirror is designed so the virtual image it produces is four times the size of the object when the distance between the object and the mirror is 18.0 cm. what is the radius of curvature of the mirror?

Which of the following statements are true for an isothermal process? check all that apply. - during an isothermal process, the work done by the gas equals the heat added to the gas. - during an isothermal process, the internal energy of the system changes. - an isothermal process is carried out at constant temperature. - an isothermal process is carried out at constant pressure. - an isothermal process is carried out at constant volume.