In each case below (i) show mathematically that the field given is a straight line, a circle or an ellipse (ii) find an expression for the angle Psi between the field vector and the x-axis. (iii) In each case describe the type of polarization. E= (jx+y)e^-jkz E= [(1+j)y+(1-j)z]e^-jkx E= [(2+j)x+(3-j)z]e^-jky E= (jx+j2y)e^-jkz

If 21.2 kcals of energy is released by this reaction, how many kj does the reaction release? (1 cal 4.184 j)

The solar panels used by mark function because of the photoelectric effect. light shines on the cells causing electrons to be ejected from the metal, which produces an electric current. at night on mars, no light will fall on the solar cells and no electric current will be generated. according to your notes, what type of light is typically needed to cause the photoelectric effect? a)visible b)ultraviolet c)infrared

An object moves from position +34m to the position -15m in 15 seconds. what is the total displacement? what is the total velocity?