Question asked by Filo student

L23. Two children are at opposite ends of an aluminium rod. One smikes the end of the rod with a stone. Find the ratio of 1- times taken by the sound wave in air and in aluminium to readi the s'cond child. Given velocity of sound in air and 1 aluminium are $346{\mathrm{ms}}^{-1}$ and $6420{\mathrm{ms}}^{-1}$ respectively.

1. I 24. Why are we able to sip hot tea or milk faster from a saucerrather than a cup?
2. I 25. Explain why the sole of a shoe is worn out.
3. Explain, why is it difficult for a fireman to hold a hose, which ejocts large amounts of water at a high velocity. I
4. 1 26. If bromine atom is available in the form of, say, two isotopos $B\%\cdot 19.7\%)$ and ${}_{3\mathrm{s}}^{81}\mathrm{Br}(50.3\%)$. Calculate the aver

Views: 5,699 students

Updated on: Feb 5, 2023