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Convergent Boundary
Divergent Boundary
Convection Currents
Subduction
Mid-Ocean Ridge
Trench
Area Where Volcanoes Form

Asmall (but heavy) particle placed in a glass of water will follow a zigzag motion because the particle will bounce off of the water molecules it meets. this is called brownian motion. a physicist simulates this on a computer, by varying the distance a particle can travel (called the mean free length), on average, before it collides with a water molecule and assigning the change in motion to be one of 8 directions, each with a similar probability. by running the simulated particle (with the same mean free length) many times she determines that it should take 15 seconds, on average, for the particle to fall to the bottom, with a standard deviation of 1.5 seconds. next she lets a real particle fall through a glass of water and finds that it took 18 seconds. what does she conclude, and why?

Plot the points (0,6), (3,15.8), and (9.5,0) using the graphing tool, and find the function

Lisa has three classes that each last 50 minutes. what is the total number of minutes of the three classes