A toy electric train moving at constant speed on a circular track that has a radius of 1.0 meters goes around the track every 10 seconds. What is the centripetal acceleration of the train?

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cell differentiation  is how generic embryonic  cells  become specialized  cells. this occurs  through a process called gene expression. gene expression is the specific combination of genes that are turned on or off (expressed or repressed), and this is what dictates how a  cell  functions.

explanation:

1 a

2 b

3 b

4 d

5 d

6 d

explanation:

measure their densities same density, same sub