Download - Data Logger Presentation
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DATA LOGGER: PRESSURE
GROUP 7:Azlin Binti Ahmad Kamaruzzaman M20121000026Nor Hafiza Binti Isa M20131000611Nurul Jannah Binti Amirul M20122001592Rozaireen Binti Badrulzaman M20131000621Siti Norafizan Binti Jalaluddin M20131000664Nurashikin Binti Muzafar M20131000660
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Small Small
give give moremore!!!!
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Ali uses two different sizes of nails to work on his Kemahiran Hidup project. He realizes that, when he uses bigger size of nails, he needs to hit the nail harder, compared when he uses smaller size of nail.
From your knowledge, what is the explanation for this situation?
ENGAGE
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Answer:
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Small give more!!
EMPOWER
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Procedure: 1. Arrange the apparatus as shown in
the diagram.
Rubber
Tube
Syringe
(20 ml)
Sensor
Syringe
(10 ml)
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Graph time(s) against pressure (kPa) for 10 ml syringe
RESULTS
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Graph time(s) against absolute pressure (kPa) for 20 ml syringe
RESULTS
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Table 1: Pressure (kPa) for 10 ml syringe
RESULTS
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Table 2: Pressure (kPa) for 10 ml syringe
RESULTS
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10 ml syringe 20 ml syringeTime
(seconds)
PressureP= F/A (kPa)
Time(seconds)
PressureP= F/A (kPa)
1 112.75 1 102.872 119.44 2 111.823 124.00 3 115.434 128.62 4 124.015 134.81 5 127.456 138.93 6 131.477 146.42 7 134.838 150.23 8 137.459 159.85 9 140.28
10 166.81 10 145.3611 175.74 11 148.8212 180.17 12 149.4313 188.26 13 152.61
Table 3: Comparison between pressure (kPa) for 10 ml and 20 ml syringe
RESULTS
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Table 4: Comparison between mean of pressures (kPa) for 10 ml and 20 ml syringe
Readings (R)
Mean (Pressure, kPa)10 ml 20 ml
R1 199.57 195.95R2 155.72 149.64R3 171.52 170.79
RESULTS
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Q: Compare the air pressure exerted on the 10 ml of
syringe and 20 ml of syringe.
A: The pressure exerted on 10 ml syringe is greater
than
20 ml syringe. For example, the value of pressure for
10 ml syringe at 13 s is 188.266 kPa compared to 20
ml syringe is 152.61 kPa.
DISCUSSION
Questions
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QuestionsQ: Based on the results from the tables and graphs above, explain the relationship between the surface area and the pressure exerted?
A: The value of pressure (kPa) is influenced by the surface area. Smaller size of syringe (10 ml) exerts greater pressure compared to bigger size of syringe (20 ml). As a conclusion, the smaller the surface area, the greater the value of pressure exerted.
DISCUSSION
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ENHANCE
Amna carries her back pack when she goes shopping, after a while, she feels her shoulder hurts. However, when she carries her school bag even for a longer period of time, her shoulder does not hurt. What is the explanation for this situation?
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ANSWER