Four large grocery food chains sell approximately how much of the nation’s food? one-fourth one-half three-fourths 100 percent

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?

1.what is where an object is located 2. what is how fast an objects speed is changing 3. what is how fast an object is moving

The coefficient of friction is a number that represents the resistance to sliding between two in contact with one another.