On a drive from your house to town, you wish to average 52 mph. The distance from your home to town is 92 miles. However, at 46 miles (half way), you fine you have averaged only 39 mph. What average speed must you maintain in the remaining distance in order to have an overall average speed of 52 mph?

Which of the following represents an upside-down image?

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?

In positive numbers less than 1, the zeros between the decimal point and a non-zero number are blank significant