Really simple answer if you know please A 400 kg box and a 200 kg are to pushed across a horizontal table, the exact same distance with the exact force. Which box will have the most work done on it? Which box will get to the end first? Explain both of your responses.

1. Box A

2. Box B

Explanation:

Box A has the greatest mass. As mass is directly proportional to Work. ie. Work= Force * Distance and Force= mass* acceleration. So,

Work = Mass* Acceleration * Distance

Box B reaches the end first as according to newtons second law, acceleration is inversely proportional to mass.Since, box B has the less mass, it will have higher acceleration and cover more distance.(Distance is directlyproportionalto speed)

i'm pretty sure its b i might be wrong though!

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.