"hot cocoa has an ideal temperature of 60 degrees celsius. at this temperature, marshmallows melt slowly and mouth burns are avoided, but the cocoa remains warm. the graph above shows the heating curve for brett's microwave. based on the graph to the nearest half-minute, how long should brett heat his cocoa? "

Dr. arenas is a scientist who has been trying to determine if increasing pressure will increase the sound that occurs when two chemicals explode. it measures the volume of the sound that occurs at the minimum pressure at which the explosion will occur. it then increases the pressure and measures the volume of the explosions that occur. what kind of investigation is the scientist conducting?