Object heig Practice
1. A concave mirror has a focal length of 18 cm. Where will an image form if an object is placed
58 cm from the mirror?

Which statement about covalent bonds is true

The transfer of heat through the movement of a gas or liquid a. convection b. conduction c. radiation

Unpolarized light falls on two polarizer sheets whose transmission axes are at right angles. a third polarizer is placed between the first two so that its axis makes a 52-degree angle with the axis of the first polarizer. a) what fraction of the incident light intensity is transmitted through the first polaroid? b) what fraction of the incident light intensity is transmitted through the second polaroid? c) what is the angle of polarization of the light that enters the third polaroid? d) what fraction of the incident light intensity is transmitted through the third polaroid. e) what happens if the middle polaroid is removed?