Prelim p3 Section a Question Paper | P–N Junction | Magnetic Field

Pages 13
Views 4

Please download to get full document.

View again

of 13
All materials on our website are shared by users. If you have any questions about copyright issues, please report us to resolve them. We are always happy to assist you.
Description
This booklet consists of 13 printed pages, inclusive of this page. College Section H2 Physics 9745 Preliminary Examinations Paper 3 Section A Longer Structured Questions C2 22-September-2009 Duration: 2 h INSTRUCTIONS TO CANDIDATES Do Not Open This Booklet Until You Are Told To Do So. 1. Write your name, class, tutor’s name and calculator model clearly on this cover page. 2. Check that you have the correct number of pages for this
Transcript
  This booklet consists of 13 printed pages, inclusive of this page. College SectionH2 Physics 9745Preliminary ExaminationsPaper 3Section A   Longer Structured QuestionsC2   22-September-2009 Duration: 2 h   INSTRUCTIONS TO CANDIDATES Do Not Open This Booklet Until You Are Told ToDo So. 1. Write your name, class , tutor’s name and calculator  model clearly on this cover page.2. Check that you have the correct number of pages forthis question booklet. 3. Answer ALL question in Section A (40 Marks). 4. The total marks for Section A is 40.5. For numerical answers, all working should be shown.6. You may use a soft pencil for any diagrams, graphs orrough working7. Do not use paperclips, highlighters, glue or correctionfluid.8. A data and formula list is provided on page 2.9. You are reminded of the need for clear presentationand good English. INFORMATION FOR CANDIDATES The number of marks is given in brackets [ ] at the end ofeach question or part question. Name of Student :Class:Name of Tutor :Calculator model: For Examiner's Use :Section A1 /10 2 /7 3 /10 4 /7 5 /6 Section B Question No. /20/20 Deductions Paper 3 /80  2009 HWA CHONG INSTITUTION (COLLEGE SECTION) C2H2 PHYSICSPage 2 of 13 Data Formulae speed of light in free space, c  = 3.00  10 8 m s -1  permeability of free space,   o = 4     10 -7 H m -1  permittivity of free space,  o = 8.85  10 -12 F m -1   (1/(36  ))  10 -9 F m -1  elementary charge, e  = 1.60  10 -19 Cthe Planck constant, h  = 6.63  10 - 34 J sunified atomic mass constant, u  = 1.66  10 -27 kgrest mass of electron, m  e = 9.11  10 -31 kgrest mass of proton, m  p = 1.67  10 -27 kgmolar gas constant, R  = 8.31 J K -1 mol -1  the Avogadro constant, N  A   = 6.02  10 23 mol -1  the Boltzmann constant, k  = 1.38  10 -23 J K -1  gravitational constant, G  = 6.67  10 -11 N m 2 kg -2  acceleration of free fall, g  = 9.81 m s -2  uniformly accelerated motion, s  = ut  + 12 at  2  v  2 = u  2  + 2 as   work done on/ by a gas, W  = p   V  hydrostatic pressure p =     gh  gravitational potential,     = -Gm/r  displacement of particle in s.h.m., x = x  o  sin   t  velocity of particle in s.h.m., v = v  o  cos     t   = 2 2( )  x xo      resistors in series, R  = R  1 + R  2 + . . .resistors in parallel, 1/  R  = 1/  R  1 + 1/  R  2 + . . .electric potential, V = Q/  4   o  r   alternating current / voltage, x  = x  o sin   ttransmission coefficient, T =  exp(-2 kd  )where 2 8  π m(U -E) k = 2 h    radioactive decay, x  = x  o  exp   ( -  t  )decay constant, 12 0.693  λ = t     2009 HWA CHONG INSTITUTION (COLLEGE SECTION) C2H2 PHYSICSPage 3 of 13 SECTION A (40 Marks)Answer all questions1 An experiment is conducted to measure the standing vertical jump height of aperson.The person stands on a platform embedded with a force sensor. He thenexerts maximum effort to jump vertically off the platform. Figure 1.1 showsthe stick figures representing 5 different positions of the jumper at successivetimes. Assume air resistance is negligible. Figure 1.1 The variation with time t  of the total force F  exerted by the feet on the platform isshown in the graph in Figure 1.2. The time t  = 0.80 s is the instant of take-off.(a) Draw labelled force diagrams on the stick figures in Figure 1.1 to show theforces acting on the jumper when he is1.2.in position Din position G. [2] t  / s Linthorne, 2001. AJP F   / N0.00 0.40 0.80 1.20 200010000 Center of gravityJumperAD F G H Figure 1.2  2009 HWA CHONG INSTITUTION (COLLEGE SECTION) C2H2 PHYSICSPage 4 of 13 (b) (i)Use Figure 1.2 to determine the length of time t  a the jumper is completelyairborne. Indicate the length of time t  a  clearly on the graph.   t  a = ___________ s[1](ii)Hence, show that the vertical velocity, v  0 at the instant of take-off is2.7 m s -1 .[1] (iii) Calculate the maximum vertical jump height, h  . h  = ______________ m[2](c) By considering all forces acting on the jumper from A to F only, a secondmethod can be used to determine the take-off velocity v  0 .(i) Draw a line on the graph in Figure 1.2 to represent the weight of the jumper. Label this line W  .[1](ii)Hence, sketch in Figure 1.3 the variation with t  of the net force F  net actingon the jumper from   t  = 0.00 to 0.80 s (from A to F).[1]time t   / s F  net    /  N   Figure 1.3 0.00 0.40 0.80
We Need Your Support
Thank you for visiting our website and your interest in our free products and services. We are nonprofit website to share and download documents. To the running of this website, we need your help to support us.

Thanks to everyone for your continued support.

No, Thanks
SAVE OUR EARTH

We need your sign to support Project to invent "SMART AND CONTROLLABLE REFLECTIVE BALLOONS" to cover the Sun and Save Our Earth.

More details...

Sign Now!

We are very appreciated for your Prompt Action!

x