The total mass of the protons in an atom of gold-198 is approximately
(1) 79 atomic mass units
(2) 119 atomic mass units
(3) 198 atomic mass units
(4) 277 atomic mass units

Suppose you stand with one foot on ceramic flooring and one on a wool carpet, making contact over an area of 76.0 cm2 with each foot. both the ceramic and the carpet are 2.50 cm thick and are 10.0°c on their bottoms. at what rate in watts must each foot supply heat to keep the top