Reaction time is the time delay between the sensory stimulus and initiation of a motor response to a stimulus. Reaction time provides the information about the cognitive performance under certain conditions .In this paper energy drink and nicotine effects on the reaction time are investigated. This study is designed to acquire reaction/ response time from young adults whom consumes energy drinks and smokes frequently. Chemicals like nicotine, caffeine, taurine and glucose affects our brain in the way that these chemicals act to decrease the reaction time and improve cognitive performance and motor response. Using means of Delta Time as features and through statistical analysis it is concluded that there is difference in response time but not significant enough (p > 0.05). After consumption the reaction time decreases slightly which cannot be considered significant to influence brain activity.

Free energy averaged potential for low density simple polar fluids used by Danon et al. has been modified for complex polar fluids like water and ammonia by introducing a dipole-quadrupole interaction term in Stockmayer angular dependent potential. The resulting temperature dependent effective pair potential is used for calculation of second virial coefficient and specific heat of water vapor at 1 and 10 atm pressure. Comparison of results shows an improvement of new potential over DA potential.