A group of students toured a limestone cave in northwest Georgia.
Which of these best explains how the limestone caves in Georgia were formed?
A. Plant roots split the rock.
B. Acidic water dissolved the rock.
C. Animals burrowed into the rock.
D. Ice formed and broke up the rock.
1 w = 1N/s the change in total energy =mgh = 600*4 = 2400N. 2400N/200N/s = 12seconds
This would be evaporation. Evaporation occurs when a liquid changes to a gas. Also, bonus facts:
When a gas changes to a liquid, this is called condensation. When a liquid changes to a solid, this is called freezing. When a solid changes to a liquid, this is called melting. When dry ice turns into carbon dioxide gas, this is called sublimation. Most other solids could probably do this, but dry ice is the most common example.
In order to calculate frictional force look below..
The formula given by

Or

u is coefficient of friction
N is normal reaction.