A train is traveling at 130mi/h for 3 hr. How far did it travel? 60 miles
90 miles
20miles
390 miles
How fa
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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.

Sort the images based on whether there's a force of attraction or repulsion between the magnets shown. attraction repulsion

What are the north and south poles of a solenoid change with?