Wo beakers are filled with different liquids. a steel ball is dropped simultaneously into each beaker: drag the slider to see what happens. the stopwatch shows the time since the balls were dropped. liquid x liquid y note: the liquids have the same density. what's different about liquids x and y? your answer should be the one- or two-word name of a physical property.

viscosity (unit millipascal second MPAs)

Explanation:viscosity of a liquid is defined as a measure of the liquid's resistance to flow example gasoline, water, and other liquids that flows freely are said to have low viscosity whereas motor oil and honey do not flow freely and have high viscosity. Vit can be measured in the laboratory by measuring the rate at which a steel ball falls through different liquids. So the physical property of liquid X and liquid Y is viscosity.

Water has a viscosity of 0.890mPas

Mercury - 1.526mPas

Motor oil - about 50 to 500mPas

Viscosity

Explanation:

Viscosity is the opposite of fluidity and can be defined as the greater or lesser resistance offered by a liquid to flow freely. In general terms the viscosity of a liquid is independent of its specific density or gravity, but it depends on the temperature at which it is found, being inversely proportional to it.

The force with which a moving fluid layer drags along the adjacent fluid layers determines its viscosity. Hence, high viscosity fluids show resistance to flow, while low viscosity fluids flow more easily. This is what happens with the balls that were dropped in the liquids.

c. heat could easily travel through the molecules in the air and escape/enter the flask. removing the air slows down the heat transfer.  

the answer is a and have a great day