VERIFIED 100% SURE NECO GCE 2016/2017 PHYSICS ALTERNATIVE TO PRACTICAL THEORY : VERIFY QUESTIONS & ANSWERS Live.

VERIFIED 100% SURE NECO GCE 2016/2017 PHYSICS ALTERNATIVE TO PRACTICAL
THEORY : VERIFY QUESTIONS & ANSWERS Live.

(1a)
PLS DRAW A TABLE:
i : 1;2;3;4;5;6
Mi(cm); 4.75;6.13;8.53;10.43;12.28;14.20
Mi(g): 47.50;
61.30;85.80;104.30;122.80;142.00
Li(cm)(Raw): 2.60;3.15;3.72;4.30;4.85;5.40;
Li(cm)(Real): 5.20;6.30;7.40;8.60;9.70;10.80
e=li-lo: 1.40;2.50;3.60;4.80;5.90;7.00
Slope= De(cm)/DM(g) = e2-e1/M2-M1
(1aviii)
-I avoided parallex error when taking the reading
-I would ensure that the masses do not touch the ground.
-I would ensure that the support is rigid
(1bi) This means that the ratio of force to extension is 10Nm-1
(1bii) E = 1/2Ke^2
but F=ke
.:. E = F/k
E= 1/2k(F/K)^2
E=F^2/2k
PRACTICAL PORTAL
3ai)
TABULATE
i|X(n)|Y(n)|V(v)|Z=V^-1|R(n)
1|2|2|1.50|0.67|1.00
2|6|3|1.30|0.77|2.00
3|12|4|1.14|0.88|3.00
4|20|5|1.00|1.00|4.00
5|30|6|0.91|1.10|5.00
Precaution:
-I will ensure tight connections of all wires
-i would ensure that the key is opened during
each reading
3bi)
R=(2*3)/(2+3)+0.8
R=1.20+0.8
R=2.0ohms
But I=E.M.F/R+r
I=E/2+r
2I+Ir=E
Ir=E-2I
r=(E-2I)/I
3bii)
V=IR
=2.6*4
V=10.40volts