Alongitudinal wave is represented by the equation z(z, t) = -2.0 cm sin(1,200 rad/s t - 20 m -1 z). another longitudinal wave is represented by the equation z(z, t) = +2.0 cm sin(1,200 rad/s t + 20 m -1 z). what is the equation that represents the superposition of the two waves?

z(z, t) = +4.0 cm cos(1,200 rad/s t) cos(20 m-1 z)

z(z, t) = +4.0 cm cos(1,200 rad/s t) sin(20 m-1 z)

z(z, t) = +4.0 cm cos(1,200 rad/s t) cos(20 m-1 z)

z(z, t) = -2.0 cm cos(1,200 rad/s t) sin(20 m-1 z)

This is the substance(s) formed in a chemical reaction.

Which composition of water moves to begin a deepwater current?

Four point charges each having charge q are located at the corners of a square having sides of length a. find symbolic expressions for the following. (a) the total electric potential at the center of the square due to the four charges (use any variable or symbol stated above along with the following as necessary: ke.) vtotal= (b) the work required to bring a fifth charge p from infinity to the center of the square (use any variable or symbol stated above along with the following as necessary: w=