Frying pans are good conductors of heat. a scientist developed four new materials to be used for making frying pans. he made rods of equal mass and length from each material. he tested their heat conductivity by exposing one end of each rod to the same amount of heat over the same duration of time. he measured the temperature change at the other end of the rod. the data he collected is shown in the table below.

based on the data collected, select the name of the substance that would make the best frying pan.

original temperature final temperature
material a 20°c 27°c
material b 20°c 37°c
material c 20°c 21°c
material d 20°c 35°c

Alinearly polarized electromagnetic wave has an average intensity of 196 w/m^2. this wave is directed towards two ideal polarizers (in real polarizers, transmission is also effected by reflection and absorption). polarizer a is oriented with its transmission axis at an angle of θ_1=20.8∘ with the incident electric field. polarizer b has its axis at an angle of θ_2=63.0∘ with the incident electric field. what is the average intensity of the wave after it passes through polarizer a? what is the average intensity of the wave after it passes through polarizer b? suppose that the two polarizers a and b are interchanged. what would the average intensity be after passing through both polarizers?