BHS PHYSICS LAB #1 Measurement, Sig Figs, EXCEL, Data Analysis.

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Presentation transcript:

BHS PHYSICS LAB #1 Measurement, Sig Figs, EXCEL, Data Analysis

BHS PHYSICS LAB #1: GOALS Take measurements with proper # of sig figs Enter, manipulate data on EXCEL Perform column calculations with EXCEL Graph data with trendlines Analyze plots: meaning of slope of functions Verify the relationships: –Circumference vs radius –Area vs radius

BHS PHYSICS Procedure Choose 5 different cylinders. Measure the diameter, circumference and Area of the bases of each cylinder Use EXCEL to compare measured values vs calculated values

BHS PHYSICS Background Sketch d C A

BHS PHYSICS Data Table

BHS PHYSICS Graph #1 RADIUS (cm) CIRCUMFERENCE (cm)

BHS PHYSICS Graph #2 RADIUS (cm) AREA (cm)

BHS PHYSICS Graph #3 RADIUS ^2 (cm 2 ) AREA (cm)

BHS PHYSICS Lab Write-up Requirements DATA TABLE GRAPHS WITH TRENDLINES –SLOPE ANALYSIS CONCLUSION

BHS PHYSICS LAB #1 DATA ANALYSIS

BHS PHYSICS RADIUS (cm) GRAPH #1: C vs r CIRCUMFERENCE (cm) C  r y = m x + b C = 2  r + 0

BHS PHYSICS GRAPH #2: AREA vs RADIUS RADIUS (cm) AREA (cm) A  r n n = 2,3,?

BHS PHYSICS GRAPH #3: A vs. r 2 RADIUS ^2 (cm 2 ) AREA (cm) y = m x + b Trendline:Linear Relationship: A  r 2 A =   r A =  r 2

BHS PHYSICS Cookie Law 2r r A  r 2 4 x more cookie!! How much more cookie?

BHS PHYSICS

Pizza Law 2r r A  r 2 4 x more pizza!! Same as Cookie Law