100% CORRECT NECO PHYSICS PRACTICAL SOLUTION (1a) Number of oscillation = 10 {NOTE: this sign ^ means Raise to power. Admin malam boi S /N | L(cm) | T(s) | T=t/10(s) | T^2(s)^2 | L (cm)^3 1. | 90.00 | 4.70 | 0.470 | 0.2209 | 729000 2. | 85.00 | 4.50 | 0.450 | 0.2025 | 614125 3. | 80.00 | 4.30 | 0.430 | 0.1849 | 512000 4. | 75.00 | 4.00 | 0.400 | 0.1600 | 421875 5. | 70.00 | 3.80 | 0.380 | 0.1444 | 343000 (Ix) Slope(s),= 720,000 - 200,000/ 0.225 -0.11 S= 520000/0.115 S= 4521739.13cm^3/s^2 (X) PRECAUTIONS (I) I made sure rigid support of the apparatus (ii) I avoided error due to parallax when reading my stopwatch (iii) I made sure I oscillate at small angle (Iv) I minimized draught (1bi) The mas M series as an oscillator (1bii) (I) Simple pendulum bob (ii) Loaded test tube (iii) Loaded spiral spring (Iv) Skin of talking drum (V) Helical spring (3a) E.M.F (E) = 3.00v , Io = 0.62A S/N | PJ=L(cm) | I(A) | y=E/A(v/A) | 1. | 20.00 | 0.58 | 5.172 | 2. | 30.00 | 0.50 | 6.000 | 3. | 40.00 | 0.45 | 6.667 | 4. | 50.00 | 0.40 | 7.500 | 5. | 60.00 | 0.35 | 8.571 | 6. | 70.00 | 0.32 | 9.375 | (Vii) Slope(s)= Y2 - Y1 / L2 - L1 S = 10.20 - 4.00/ 80 - 7 S = 6.20/73 S= 0.0849v/A The intercept C on the vertical axis = 2.70v/A (Viii) K = Io C K = 0.62 x 2.70 K = 1.674 (Ix)PRECAUTIONS (I) I ensured hight connection of the wire of all the instrument use (ii) I maintained steady flow of current before taking my reading (iii) I made sure that I removed the key after each reading to avoid drained of the cell (Iv) I avoided error due to parallax on ammeter (V) I made sure that the jockey is not dragged on the wire of the potentiometer 3bi The Key K. This is because the key serves as switch which does not drain any current or voltage from the source of e.m.f. 3bii From the definition of resistivity P=R.A/L but A=^d2/4 P=R=^d2/4/L P=^Rd2/4L P4L=^Rd2 divide both side P4 L=^RD2/4P Where P is the resivitivity of the material. *****COMPLETED***** Hit the like,share & Comments Good Luck!!!!
Posted on: Thu, 05 Jun 2014 08:55:05 +0000
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