Procedure, Post-lab discussion, Questions – PASCO ME-9849 Significant Figures Set User Manual
Page 24
Significant Figures Set
Addition, Subtraction, and Significant Figures
22
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Procedure
1.
Measure the length of each sample object using a different side of the four-sided meter stick
(as assigned by your teacher).
2.
Calculate the total length.
3.
Record your data and calculations. Enter them in the data table on the board.
Post-Lab Discussion
Have students observe the data table. Ask students what determines the precision of the total
length. Direct students to realize that the least precise measurement in their calculation determines
the precision of the total length. As a class make any necessary changes to the calculations.
Questions:
1.
What is the general rule for adding and subtracting measured values?
2.
What is the general rule for multiplying and dividing measured values?
3.
What is the general rule for "exact" numbers in the calculation of measured values?
Group #
Object 1 (cm)
Object 2 (cm)
Object 3 (cm)
Total (cm)
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- UI-5000 850 Universal Interface Instruction Manual (24 pages)
- PS-2193 High Current Sensor (2 pages)
- ME-8979 Mass and Hanger Set (1 page)
- ME-9498A Photogate Head (3 pages)
- ME-6821A Photogate Mounting Bracket (2 pages)
- ME-6825A MINI LAUNCHER (39 pages)
- ME-6810 Time of Flight Accessory (24 pages)
- ME-8574 DISCOVER FRICTION ACCESSORY (4 pages)
- PS-2103A Motion Sensor (4 pages)
- PS-2189 High Resolution Force Sensor (2 pages)
- ME-9448B Super Pulley with Clamp (2 pages)
- ME-6955 1.2 m PAScar Dynamics System (27 pages)
- PS-2104 Force Sensor (2 pages)
- ME-8998 Elastic Bumper Kit (2 pages)
- ME-6843 Spring Cart Launcher (9 pages)
- ME-6950 PAScar with Mass (29 pages)
- PS-2120A Rotary Motion Sensor (9 pages)
- PS-2120A Rotary Motion Sensor (17 pages)
- ME-9821 Centripetal Force Pendulum (18 pages)
- ME-8088 Centripetal Force Apparatus (20 pages)
- ME-8735 Large Rod Stand (2 pages)
- CI-6545 Force Accessory Bracket (3 pages)
- ME-9806 Photogate Brackets (1 page)
- CI-6692 IDS MOUNT ACCESSORY (2 pages)
- ME-6569 RMS_IDS KIT (36 pages)
- ME-6829 Mini Launcher Ballistic Pendulum (18 pages)
- ME-9889 Discover Free Fall System (10 pages)
- SE-7256 Motion Sensor Guard (2 pages)
- ME-8973 Discover Collision Bracket (2 pages)
- AP-8214A Stress_Strain Apparatus (12 pages)
- CI-6691 MINI-ROTATIONAL ACCESSORY (2 pages)
- ME-9833 Physical Pendulum Set (30 pages)
- OS-8473 POLARIZER SET (2 pages)
- PS-2343 USB Camera (2 pages)
- AP-8215A Gravitational Torsion Balance (20 pages)
- OS-8526A X-Y ADJUSTABLE DIODE LASER (2 pages)
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- PS-2150 Broad Spectrum Light Sensor (2 pages)
- PS-2164 Quad Pressure Sensor (3 pages)
- PS-2200 Load Cell, 100 N (3 pages)
- PS-2205 Dual Load Cell Amplifier (5 pages)
- PS-2107 Absolute Pressure Sensor (2 pages)
- PS-2102 pH Sensor (3 pages)
- PS-2119 Acceleration Sensor (2 pages)