Viscosity of liquids is essentially the 'thickness' of the liquid. For instance, honey and water have different viscosities. Honey has a higher one and therefore, liquids with high viscosity do not flow as well as liquids with low viscosity (water).
a substance's density is the same at a certain pressure and temperature, and the density of one substance is usually different than another substance.
1. False
2.False
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4.True
5. True
6. False
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From the law of Galileo Galilei :v²=v₀²+2ad we take the speed
v²=0+2*4.90*200=1960=>v=√1960=44.27 m/s
Explanation:
everything can be found in the picture
