Which of these statements about water is true? Which of these statements about water is true?
2 answers:
Answer:
Its molecules are farther apart in the solid state than in the liquid state.
Explanation:
Unlike most other liquids that reduce in volume with decrease in temperatures, when water goes below 4 degrees centigrade, the volume begins to increase. This is due to the way the water molecules arrange themselves in ice. Water molecules are polar and align themselves with regards to their dipoles. The partially positive hydrogen ends tend to place themselves some distance between two partially negative oxygen ends of the adjacent molecules. This pushes the molecules farther apart in crystalline (solid) form than in liquid form.
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Answer:
N/m2
Explanation:
Shear stress on cells lining the walls of the blood vessels is equal to 20 dyne/cm2
In terms of Newton/square meter, shear stress is equal to
N/m2
Shear modulus is equal to shear stress divided by shear strain
Thus, shear modulus is equal to
N/m2