explanation for question 6 please
http://papers.xtremepapers.com/CIE/...and AS Level/Physics (9702)/9702_s04_qp_4.pdf
http://papers.xtremepapers.com/CIE/...and AS Level/Physics (9702)/9702_s04_qp_4.pdf
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thank you broo
Solution 784hello gys can any one explain this
Vertical v at t=0 is 6ms^-1View attachment 58660
View attachment 58661
View attachment 58662
View attachment 58663
can someone pls explain this .. i keep doing and i get the answer as 4.3 but the ms says 3.4
TIA
Look, from the graph, at t=o, the vertical component of the ball's velocity is 5.9 ms^-1.View attachment 58660
View attachment 58661
View attachment 58662
View attachment 58663
can someone pls explain this .. i keep doing and i get the answer as 4.3 but the ms says 3.4
TIA
Look, from the graph, at t=o, the vertical component of the ball's velocity is 5.9 ms^-1.
View attachment 58664
^ so we're given this info, that i've drawn on the figure.
For finding Vh, apply tan
tan 60° = 5.9/vh
vh = 5.9 / tan 60°
vh = 3.4 ms^-1 Ans.
Yeah you must make sure that it's in degreesthanx ... i just realised what i had done....i was doing the same calculation but my calculator was in a different mode .. soo sorry for the trouble!
Thanks! That was fast again. Flash
Welcome.Thanks! That was fast again. Flash
Oh! am IWelcome.
No,it wasn't. You're just late. XD
It's C, because work done = Force applied * distance moved in the direction of forceA weight W hangs from a trolley that runs along a rail. The trolley moves horizontally through a distance p and simultaneously raises the weight through a height q.
View attachment 58711
As a result, the weight moves through a distance r from X to Y. It starts and finishes at rest. How much work is done on the weight during this process?
A Wp
B W(p + q)
C Wq
D Wr
it's the diameter which has the largest effect. Look in the equation, d is a squared quantity. So the %age uncertainty in d would need to be doubled. So it will have the largest effect.The Young modulus of the material of a wire is to be found. The Young modulus E is given by the equation below.
E=4F*l/πd^2*x
The wire is extended by a known force and the following measurements are made. Which measurement has the largest effect on the uncertainty in the value of the calculated Young modulus?
View attachment 58710
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