1
1 mark
1 markWhich is the best estimate of the area of a rectangular field of length 98 ± 3 m and width 47 ± 2 m?
4600 ± 5 m2
4600 ± 6 m2
4600 ± 300 m2
4606 ± 337 m2
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1.2 Handling Data
21 mark
1 markThe units for the gradient of a graph are kg m-1 s-2.
Which one of the following options is a possible graph with this gradient?
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31 mark
1 markA voltmeter and ammeter are used to determine the resistance in a resistor. The value of the resistance is found to be 8.50 Ω with an absolute uncertainty of 15 %. The current through the resistor is measured to be 2.35 A with an absolute uncertainty of 6%.
What is the uncertainty of the voltmeter?
± 1.80 V
± 0.09 V
± 2.19 V
± 1.28 V
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41 mark
1 markA trolley is released from rest and it travels down a ramp. Its velocity is measured at 0.5 s intervals. The table of results are shown below, and a graph is plotted.
|
v / m s-1 |
t / s |
|
0.620 |
0.5 |
|
1.99 |
1.0 |
|
3.00 |
1.5 |
|
3.98 |
2.0 |
|
4.99 |
2.5 |
Which statement is true?
There are no anomalies in the results
The area under the graph is 6.2 m (2 s.f)
The gradient of the graph is 1.7 m s-2 (2 s.f)
The graph will show an inversely proportional relationship between v and t
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11 mark
1 markA solid cylindrical glass rod has length 20.0 ± 0.1 cm and diameter 5.00 ± 0.01 mm.
What is the percentage uncertainty in the calculated volume of this rod?
0.1 %
0.2 %
0.7 %
0.9 %
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21 mark
1 markWhich is the best value for the elementary charge e in terms of both accuracy and uncertainty?
(1.5 ± 0.5) × 10−19C
(1.5 ± 0.4) × 10−19C
(1.7 ± 0.2) × 10−19C
(1.8 ± 0.2) × 10−19C
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31 mark
1 markThe student measures the height of a tube. The student’s values are:
83.5cm 82.9cm 83.3cm 83.1cm
What is the average height h and the absolute uncertainty in h?
83.2 ± 0.3 cm
83.2 ± 0.1 cm
83.2 ± 0.5 cm
83.1 ± 0.3 cm
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41 mark
1 markA student of mass 85.2 kg uses a set of weighing scales to measure his mass three times. The following readings are obtained.
|
|
Mass / kg |
|
Reading 1 |
87.2 |
|
Reading 2 |
87.1 |
|
Reading 3 |
87.2 |
Which statement describes the precision and accuracy of the data?
not precise to ± 0.1 kg and accurate to ± 0.1 kg
not precise to ± 0.1 kg and not accurate to ± 0.1 kg
precise to ± 0.1 kg and accurate to ± 0.1 kg
precise to ± 0.1 kg and not accurate to ± 0.1 kg
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51 mark
1 markA hard disk is labeled as having a storage capacity of 420 GB. The letter B stands for byte, which is a unit. What is the equivalent storage capacity in bytes?
4.20 x 108
4.20 x 1011
4.20 x 109
4.20 x 1017
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