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P.H.Y.S.I.C.S P2 D.O.U.B.T.S CIE

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leebux101:
does anyone have short brief at-a-glance notes for physics?

nid404:
Notes on what topic?

halosh92:
for the uncertainities
if the final uncertainity is 0.0045 do we round it off 0.005
or do we take it only to 1 sf without rounding it off
and to how do we know to how many sf we take the uncertainity??
and in between the questions when were calculating the percentage uncertainities inbetween...do we round these numbers also?
and to how mnay sf also do we take the percentage uncertainity?
thxxx

nid404:
It depends on your answer. significant figures in uncertainty should be equal to or lesser than the answer you obtained.

halosh92:
Q3b
m(v-u)
45/1000 (-3.6-4.2)
= -0.35
but the ms says its positive and they have used 4.2 as v
and 3.6 as u
hows that possible?

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