If the empty beaker has a mass of 150 g, the full beaker has a mass of 250 g, and the time interval is 20 sec, determine the uncertainty in the measured fluid mass.

Ans. : frostbite is when exposure to cold temperatures causes freezing to the skin or other tissues. it most commonly affects the hands, feet, and face. the longer areas are exposed to cold, typically the worse the frostbite. the water temperature used for rewarming a frostbitten part should be : (102 -105) f degrees.

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In any atom of any element, you will find protons and neutrons in the nucleus of any atom