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Why is an echo not heard in a small room ?
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Answer / aman amit
ECHO is not heard in a small room because the minimum
distance of echo to be heard is 17m and a small room is not
of 17m.
| Is This Answer Correct ? | 15 Yes | 2 No |
Answer / guest
The minimum distance fat which reflection mist tale place
for an echo to be head distinctly is 56 ft. Hence in a room
of dimensions less than 56 ft, echoes will not be heard.
| Is This Answer Correct ? | 12 Yes | 7 No |
Answer / noor ahmed
eacho is not heard in a small room bacause the minimum
distance of echo to be heard is 17m and a small room is not
of 17m.
| Is This Answer Correct ? | 2 Yes | 5 No |
What is positive testing in relation to chemistry? For example, the sentence reads "Sample solutions are solutions known to contain one of each of the following ions, silver ion, Ag+(aq), barium ion, Ba2+(aq), and iron (III) ion, Fe3+(aq). Testing solutions are the solutions containing a polyatomic ion that can react with one of the metal ions to give a positive test." I am then asked to define what a "positive test" is. I am currently a student who is pretty new to chemistry, please try and make your answer as simply as possible. Thanks for the help.
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