Assume the sun light intensity is 980 W/m2 and the area of the solar cells used to receive this energy is 41.0 m2 . The efficiency of the solar cells is 12%. What is the power delivered by the solar cells

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?

How many astronauts have walked on the moon?

What are known as the properties of substances that describe a substance et does not change that substances?