The temperature of a smelting furnace is found to be 2000 degree Celsius. find the temperature on Fahrenheit scale

What is the radius of the circular path ofa charged particle in a magnetic field?

Explain why the aperture of the spherical mirror should be small compared to the radius of curvature of the mirror.

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.