A 61.0 cm wire carries a current of 1.00 A. The wire is formed into a single circular loop and placed in a magnetic field of intensity 1.00 T. Find the maximum torque that can act on the loop.

Name three different units of energy used to measure heat and describe what type of situations each is usually used.

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.

How does changing the frequency affect the energy of the wave?