A positively charged sphere with a charge of +8Q is separated from a negatively charged sphere -2Q by a distance r. The spheres briefly touch each other and move to the original distance r. What is the new charge on each sphere after they move to the distancer? please help me ​

Tafari worked one summer on a ship that set weather buoys in the ocean. he watched how one of the buoys moved in the water. describe which parts of the wave would cause the buoy to bob up and down. which wave property determined how fast the buoys bobbed in the water? he observed that when the wind blew harder, the ocean waves were larger, and the buoys moved away from the ship. what effect, if any, did the waves have on how far the buoys moved? explain your answer.

Which additional product balances the reaction h2so4 + 2naoh → na2so4 + 2h2o 2oh h2o2 h3o

All phase changes are .an example of a phase change is an ice cube melting