If I0 is the intensity of the unpolarized light incident on the first polarizer, and I1 and I2 denote the intensity of the light after the first and second polarizers, respectively, which of the following quantities are known? a) I1
b) theta1
c) I0
d) I2
e) theta2

In a given chemical reaction, the energy of the products is greater than the energy of the reactants. which statement is true for this reaction?

Kate is working on a project in her tech education class. she plans to assemble a fan motor. which form of energy does the motor convert most of its electric energy into? a. light energy b. motion energy c. sound energy d. thermal energy

How is coal extracted from mountaintop removal mines? a. dynamite is used to create underground tunnels where miners go to extract the coal. b. dynamite is used to break apart rocks and then draglines are used to remove the broken rock and reach the coal. c. coal in mountaintops is extracted by digging strips in the landscape to reach the coal. d. placer deposits in mountain river bottoms are removed by