Suppose you spray your sister with water from a garden hose. The water is supplied to the hose at a rate of 0.405×10−3 m3/s and the diameter of the nozzle you hold is 5.77×10−3 m. At what speed does the water exit the nozzle?

Astudent performs a reaction in a beaker by reaction silver nitrate with one long copper wire. the student’s thermometer changes from 27°c to 35°c. based on this, is this reaction endothermic, exothermic, or neither? explain your reasoning.