What wave shape occurs if the particles travels perpendicular to the direction of the wave? HELP PLZ

At time t=0, a particle is located at the point (3,6,9). it travels in a straight line to the point (5,2,7), has speed 8 at (3,6,9) and constant acceleration 2i−4j−2k. find an equation for the position vector of the particle.

Under normal conditions, describe how increasing the temperatures effects the solubility of a typical salt

You can decrease the resistance of a length of wire by