Lecture 01 - CH204 Experiment 1 Dr. Brian Anderson Fall...

Info iconThis preview shows pages 1–10. Sign up to view the full content.

View Full Document Right Arrow Icon
CH204 Experiment 1 Are the Densities of Coke and Diet Coke Different? d = m V Dr. Brian Anderson Fall 2008
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Today • Error in experimental data –Random – Systematic – Gross • Accuracy and precision – Accuracy – how close your final answer is to the correct one – Precision – how close your data points are to each other
Background image of page 2
More Today • Significant digits – Count ’em! – Add and subtract ’em! – Multiply and divide ’em! • Standard deviation – A statistical measure of random error • Quick look at Experiment 1
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Significant digits All non-zero digits are significant. There are only two cases when zeroes are not significant: 36000 0.0075 All other zeroes are significant.
Background image of page 4
Significant zeroes “Captive” zeroes are significant: 36,003 1.0075 Trailing zeroes after a decimal place are also significant: 0.00750
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Multiplying and Dividing Look for the number with the fewest digits , and use that many in your answer. 45,398 x 34.5 = 1,570
Background image of page 6
Adding and Subtracting Look for the number with the fewest decimal places , and use that many in your answer. 55.685 + 1.7 57.485
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
How much does a quarter weigh?
Background image of page 8
.. 5.7128
Background image of page 9

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 10
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 27

Lecture 01 - CH204 Experiment 1 Dr. Brian Anderson Fall...

This preview shows document pages 1 - 10. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online