Question
What is meant by ‘diffusion’? Give one example of diffusion in gases.
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Root hair is extension of which type of cell?
Two children A and B weigh the same and start climbing up a rope separately up to a height 8m. If A takes 15s while B takes 20s to accomplish the task, who has more power and why?###State and define S.I. unit of power. Two children A and B both weighing 32kg start climbing up a rope separately reach a height of 8m, 'A' takes 15s and 'B' takes 20s to reach the level calculate the amount of work done by A and B. which of the two has more power. show by calculate. [g = 10m/ s2]
A man standing 825 metres away from a cliff (steep rock) fires a gun. After how long will he hear its echo? Speed of sound in air is 33m/s.
Define the terms and given one example:
Coelom.