Acar of mass 1091 kg climbs a 5.0° slope at a constant speed of assuming that air resistance and friction with the road may be neglected, at what rate must the engine deliver mechanical energy to the car?

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."