You exert a force of 120N on a desk What if your friend exerts a force of 150N in the same direction What net force do you and your friend exert on the desk?

how to make a simple air condition

because of all the things that happen around the us, many people get into arguments which sadly could get physical, but we should actually make a change for that.

on passing the small ampere of electric current through the tube made of ar and hg of cfl generates uv rays which excites the fluorescent and thus emits the high radiation by consumption of just 5- 12 w in comparison to incandescent light which requires more power such as around 40 - 55 w to lighten.

moreover the life span of fluorescent or cfl is around 8000 h whereas the life span of incandescent is around 1200 h

hence, the building installed with incandescent lights bears more electricity bill.