Qualification > Sciences
physics help needed........plz
ashwinkandel:
one more question related to this:
5 A student makes measurements from which she calculates the speed of sound as 327.66ms–1.
She estimates that her result is accurate to ±3 %.
Which of the following gives her result expressed to the appropriate number of significant figures?
A 327.7ms–1 B 328ms–1 C 330ms–1 D 300ms–1
elemis:
Is it D ?
Which year ?
ashwinkandel:
ya it is D . Can you explain me how is it D?
elemis:
--- Quote from: ashwinkandel on October 03, 2010, 01:54:04 pm ---ya it is D . Can you explain me how is it D?
--- End quote ---
I THINK this is the explanation :
Since the uncertainty is given to a maximum of 1 s.f. therefore the actual answer should also be given to an accuracy of 1 SF.
Hence, answer = D
What year is this question from ?
ashwinkandel:
thanks for the explanation. this question was from CIE 2003 May/June paper 1.
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