Unpolarized light is incident upon a system of two polaroid sheets. if a fraction of 0.161 of the inital incident light passes through the system, then what is the angle between the polaroid sheets?

Which of the following represents an upright image? a. -do b. +m c. -m d. +do

Aforce of 240.0 n causes an object to accelerate at 3.2 m/s2. what is the mass of the object?

We have a colorless transparent liquid. it looks like water. we seperated it into a solid and a liquid by evaporration and condention was this a chemichal or a physical seperation a. chemical seperation b. physical seperation