When a 2.75-kg fan, having blades 18.5 cm long, is turned off, its angular speed decreases uniformly from 12.0 rad/s to 7.0 rad/s in 5.00 s. if its angular acceleration does not change, how long after it is turned off does it take the fan to stop?

Achemistry student needs of 40ml diethylamine for an experiment. by consulting the crc handbook of chemistry and physics, the student discovers that the density of diethylamine is 0.7 . calculate the mass of diethylamine the student should weigh out. round your answer to significant digits.

In positive numbers less than 1, the zeros between the decimal point and a non-zero number are blank significant

Determine the age of a fossil if it had only one eighth of its original carbon-14 content remaining?