Qualification > Sciences
Physics Help HERE ONLY !!
Ibiza279:
--- Quote from: 247sports on June 03, 2009, 11:32:38 am ---I hav some quests in ppr may june 2002
2c)
8c)
and in may june 2007
2a) and 9a)
and i need explanation i hav the markin scheme but i need to understnad it
thnk u ;)
--- End quote ---
2c: the change in speed is 9.5 m/s cause frm 9.5,when the ball touches the grnd it comes to 0 so its 9.5 i hope thats what the mark scheme says
8c: the function of a diode is that its a rectified, it changes frm A.C to D.C so as the A.C current flows in forward bias of the diode, the diode allows the flow but when A.C flows in the opposite direction, the diode doesn't allow that so A.C changes to D.C
n for 2007 i don't hav the paper so if u give me the question, ill clear it
all the best
SGVaibhav:
--- Quote from: Adi...\m/ on June 03, 2009, 11:12:13 am ---
--- Quote from: Ibiza279 on June 03, 2009, 11:10:19 am ---uh wat r the four equations of motion again :D
--- End quote ---
s= ut + 0.5a(t^2)
s = (u+v)/2
v = u + at
v^2 = u^2 + 2as
:)
--- End quote ---
i found fifth equation of motion
i dont think its there in portion, but i found 5th one
its rocks.
SGVaibhav:
--- Quote from: Adi...\m/ on June 03, 2009, 11:07:56 am ---okk..i have attached it...1c...
u have to draw a tangent to the point (where the dent lies)
this way u get the point on the x-axis near 24
24-20 = 4 --> 4/2 = 2
2*12 = 24m!
hope this helped
--- End quote ---
it helped
thanks
Kim:
--- Quote from: Ibiza279 on June 03, 2009, 11:23:56 am ---
--- Quote from: kim on June 03, 2009, 11:20:03 am ---hey cud sum one explain how to calculate the voltage using a CRO? ???
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u need to knw the value of voltage per square in the CRO when u knw that note down how many squares the crest of the wave goes to n then multiply it with the voltage per square n that gives u the total voltage
--- End quote ---
kk thanks ;D
Ghost Of Highbury:
--- Quote from: sgvaibhav on June 03, 2009, 11:50:17 am ---
--- Quote from: Adi...\m/ on June 03, 2009, 11:07:56 am ---okk..i have attached it...1c...
u have to draw a tangent to the point (where the dent lies)
this way u get the point on the x-axis near 24
24-20 = 4 --> 4/2 = 2
2*12 = 24m!
hope this helped
--- End quote ---
it helped
thanks
--- End quote ---
welcome.
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