A potential difference of 12 V is found to produces a current of 0.40 A in 3.2 m length of wire of radius 0.40 cm. What is the total resistance and resistivity of the wire

What is created when solids, liquids, an gases mix with one another

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.

Clothes dryer uses about 7 amps of current from a 240 volt line. how much power does it use?