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physics doubts VERY URGENT!!!!!!!!!!!!

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astarmathsandphysics:
1 hour

astarmathsandphysics:
b)Number of charge carriers much smaller for silican so they must move faster
c)when temp increases resistance decreases as for all semiconductors

AS panic attack:
Thanks

and its an edexcel paper

halosh92:
physics cie
AS
mayjune 2008
q 4c

in the ms....there is 4.7
where did they get it from
plz someone hurry up!
thx

nid404:

 1.01 × 105 Pa=Hx X 1.08 × 103 X 9.8
H=9.53m

change in h= 10-9.53=0.47

dh/h=0.47/10 X100 = 4.7%

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