Qualification > Sciences
Physics CIE help
*Hope*:
hey astar wat about questions 9,11(why not D) of the same year? Thanks in advance ;)
astarmathsandphysics:
repeat the paper and year
sweetie:
for Q21 the ms says A ::) ::)
and can u xplain Q18 in more detail plz.......
nid404:
Q18)
k.e+p.e at Q = k.e + work done against friction
55=k.e+10
k.e=45kJ B
tmisterr:
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
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