Question
Convert the following units in metre.
| Smaller units | Value in metre |
| Centimeter (cm) | 10^(-2)m |
| Millimeter (mm) | 10^(-3)m |
| micron or mu m | 10^(-6)m |
| nanometre (nm) | 10^(-9)m |
| angstrom (A) | 10^(-10)m |
| fermi ( f ) | 10^(-15)m |
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An athlete completes one round of a circular track of diameter 200 m in 40 s. What will be the distance covered and the displacement at the end of 2 m and 20 s?
| Group in the modern periodic table | Families |
| a) 1 | ? |
| b) ? | Transition metals |
| c) ? | Boron family |
| d) 15 | ? |
| e) 17 | ? |