energy/unit area

distance

both of the above

it has no units

Red wood

Say bolt

Engler

Orsat

specific gravity = gravity x density

dynamic viscosity = kinematic viscosity x density

gravity = specific gravity x density

kinematic viscosity = dynamic viscosity x density

higher surface tension

lower surface tension

surface tension is no criterion

high density and viscosity

51 cm

50 cm

52 cm

52.2 cm