F the copper is drawn into wire whose diameter is 8. 50 , how many feet of copper can be obtained from the ingot? the density of copper is 8. 94 g/cm3g/cm3.

In positive numbers less than 1, the zeros between the decimal point and non zero are significant

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.

An ionic compound can conduct electricity when a it is dissolved in water b its crystals are ground into powder c it is in solid form d it is heated to just below its melting point