Question
Define buoyant force. Name two factors on which buoyant force depends.
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Why is nucleus called director of the cell?

Give one example each of a body possessing: (i) kinetic energy, and (ii) potential energy.
What is the characteristic of nuclear envelope?
| Time (in sec.): | 0 | 1 | 2 | 3 | 4 | 5 | 6 |
| Velocity (in m/s): | 2 | 4 | 6 | 8 | 10 | 12 | 14 |
Name two factors on which shape of the cell depends.