A car is travelling with a velocity of 90 km per hour and other with 72 km per hour in opposite direction find the relative velocity between them​

dopamine..

"it was found that some people who were taking the drug l-dopa to raise their levels of dopamine were developing schizophrenic-like symptoms supporting research a strength of the dopamine hypothesis is that there are many studies which have shown support for the neurochemical explanation."

vapour or gas assuming atmospheriv pressure

this could be newton#'s law of cooling. the cooling curve is exponential

i already answered it by 34/s