Clarence is taking his dog for a walk around town. After wandering around for an hour, his mother calls him, telling him dinner will be served soon, and asks him how far away he is. What value would be more helpful for him to give, his distance or his displacement?

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?

If a car has a speed of 20 m/s, how long will it take to go 155 m? a. 3100 s b. 135 s c. 2.1 s d. 7.8 s

Which is the most common use for infrared waves? to determine relative distance to provide heat to carry cell phone conversations to transmit signals