Which event may occur when ocean salinity increases? (Its not multiple choice) 1. mass of water increases
2. freezing point of water increases
3. sunlight in deeper locations decreases
4. amount of dissolved gases in water increases

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.

Work = force × a. work b. energy c. distance d. momentum

Amoving electron has kinetic energy k1. after a net amount of work w has been done on it, the electron is moving one-quarter as fast in the opposite direction. (a) find w in terms of k1. (b) does your answer depend on the final direction of the electron's motion?