Physics, 09.12.2019 11:31, josephfoxworth
35 points! say if you drop a ball from 100 centimeters. when the ball bounces, the ball does not bounce back up to 100 centimeters, but according to the law of conversation of energy, energy can not be destroyed so where did the energy go?
Answers: 2
Physics, 22.06.2019 06:40, PerfectMagZ
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 ΞΈ_1=20.8β with the incident electric field. polarizer b has its axis at an angle of ΞΈ_2=63.0β 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?
Answers: 2
35 points! say if you drop a ball from 100 centimeters. when the ball bounces, the ball does not bo...
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