Physics-Practical

2) CLICK HERE FOR THE GRAPH
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3) CLICK HERE FOR THE GRAPH
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1av)
Tabulate
S/N |1|2|3|4|5
XI |90|80|70|60|50|
Qi|30.20|40.00|51.00|57.00|60.00|
ti |33|31.50|31.00|30.50|30.00|
cosi |119.60|100.00|78.00|66.00|60.00|
cos |-04939|-0.1736|0.2079| 0.4067|
T |1.65|1.58|1.55|1.53|1.50|
T² |2.72|2.50|2.40|2.34|2.25
1aix)
i) I avoided parallax error in reading clock/weight balance
ii) I ensue repeated readings are taken to avoid random error
1bi)
i)it experience least damping effect
ii)the effect of air resistance on spherical shape in lower compared to other shape
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2a)
Tabulate
S/n | Ag/cm | 8C1/cm | tiata | U= Bc/Ac | cost Rita |

Under S/n: 1, 2, 3, 4, 5

Under Ag/cm: 7.10, 7.90, 8.10, 8.70, 9.35

Under 8C1/cm: 2.10, 3.60, 4.25, 5.30, 6.40

Under tita: 70, 46, 35, 25, 19

Under U = Bc/Ac: 0.29, 0.45, 0.52, 0.60, 0.65

Under cos tita: 0.34, 0.69, 0.80, 0.90, 0.94

2av)
(I) I would avoid error due to parallax
(II) I would ensure right Postion of the ruler while taking the reading
2bi)
Principal axis is an imaginary line passing through the center of the lens in which the principal force of the lens passes through.
2bii)
H2 = 2cm, Do = 6cm
H2 = 6cm
H2 = 4.1cm
M = Hi/Ho = 4.1/2
= 2.05
M = Di/Do = 2.05 = Di/6
Di = 6 x 2.05 = 12.16
= 12.3cm
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3a)
R ohms
R1 = 1ohms R3 = 3ohms 
R2 = 2ohms R4 = 4ohms
R5 = 5ohms
V1 = 1.90v
V2 = 2.15v
V3 = 2.3v
V4 = 2.40v
V5 = 2.5v

In a tabular form 
Under S/N
1, 2, 3, 4, 5

Under R(ohms )
1.00, 2.00, 3.00, 4.00, 5.00

Under V(v)
1.90, 2.15, 2.30, 2.40, 2.50

Under R^-1(ohms^-1)
1.000, 5.000, 0.333, 0.250, 0.200

Under V^-1(V^-1)
0.5263, 0.465, 0.4347, 0.4167, 0.400

Under R^-1/V^-1
1.900, 1.07, 0.768, 0.5999, 0.500
3aiv)
i)i would ensure that the terminal are well tightened to avoid partial contact
ii)i would obey the conect connection of positive to positive to negative to negative when connecting to circuit
3b)
i)Length of wire
ii)nature of wire
3bii)
Total resistance, 
R = 3 + (3×3)/(3+3)
R = 4.5 ohms
Current, I = V/R
I = 6/4.5
I = 1.33 A
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