"Perform the following sequence of operations, applying significkg/m3ant rules: Dr. Sormunen's head weighs 5.05 kg. When Dr. Sormunen places his head in a graduated bucket, the water level rises from 15.8 L to 21.0 L. What is the density of his head?".

(Use correct SF ( significant figures) and units in your answer)

Mass of the head = 5.05 kg

Volume of head when in water = 21.0 -15.8 = 5.2 L = 5.2 *1000 cc = 5.2 * 10^{3 }=5.2*10^{-3 }m^{3 }

Density of head = Mass /Volume = (5.05/5.2) * 10^{3 }kg/m^{3 } = 971.15 kg/m^{3}