A 280 g block on a 60-cm-long string swings in a circle on a horizontal, frictionless table at 75 rpm .

A500g object falls off a cliff and losers 100 j from its gravitational potential energy store. if the gravitational field strength g=9.8n/kg, how high is the cliff?

Which of the following explains why it took so long for the public to accept the negative health effects of smoking? a)people were waiting for counter reasons, and those were presented.b)scientists had not completely finalized their results, which took 30 years.c)cigarettes were cheaply available and media channels were very inefficient.d)cigarette manufacturers were trying hard to bring an alternative into the market

Curious carl calculated the density of a cube to be 4.50 g/cm3. what is the density of the cube in g/l?