Determinati:limitele de masurare, valoarea unei diviziuni si eroarea absoluta instrumentala a dinamometrului medicinal din fig.7 . Scrieti rezultaltul masurarii dau multe puncte si coroana pls help

In raising a 6200-n piano with a pulley system, the movers note that, for every 2.2 m of rope pulled down, the piano rises 0.12 m . ideally, find the force required to lift the piano.

The us government wants to allocate billions of dollars in the next 10 years to assure our future energy security. the funds will be spread among a variety of possible energy resources. where do you think the government should put the greatest support: solar energy, wind energy, clean coal, oil exploration, gas exploration, or a combination of sources? are there other efforts that should be explored? support your position with cited information for both questions.

If steel is more dense that lake water, why can a boat float