1) a) Find a plane model for the connected sum of two tori: T#T = 2 T. b) Draw an arbitrary closed curve on the torus that does not bound a disk on the torus. Depict this curve on the plane model of the torus.
c) Draw a correspondent closed curve on 2 T. Depict this curve on the plane model of 2 T.
2) Does the surface n T have the fixed point property?

Which device uses ac current to operate?

A- a of 8.00 cm a of 34.0 nc. a , -, a of 25.0 nc is on of a of 15.0 cm .be toto aof ? a) b) c) j d) e)

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.