Which shows the conversion of 2.09 × 10-4 meters to millimeters?
a.
0.000209 m × 10 mm/m = 0.00209 mm
b.
0.000209 m × 1000 mm/m = 0.209 mm
c.
0.000209 m × 100 mm/m = 0.0209 mm
d.
2.09 m × 1000 mm/m = 2,090 mm

What are similarities and differences of reflection, refraction, diffraction and absorption?

Unpolarized light of intensity i_0=750w/m^2 is incident upon two polarizers. after passing through both polarizers the intensity is i_2=280w/m^2. (a) what is the intensity of the light after it passes through the first polarizer in w/m^2? (b) write an equation for the angle between the polarizers in terms of the initial (i_0) and final (i_2) intensities. (c) find the angle between the polarizers in degrees.

Road users moving into your lane, brake lights, and abrupt changes in road surface are a. rare at night b. indicators of potential hazards c. not worth worrying about before you reach them d. no problem for experienced drivers