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course PHY121
•Let 'cm' stand for centimeters as measured with the full-sized ruler. •Let 'cm_s' stand for centimeters as measured with the singly-reduced ruler.
• Let 'cm_d' stand for centimeters as measured with the doubly-reduced ruler.
• Let 'cm_t' stand for centimeters as measured with the triply-reduced ruler.
Answer the following:
Which is longer, one cm_d or one cm_s?
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One cm_s
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Which is longer, one cm_s or two cm_t?
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One cm_s
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It is likely that your answers to the following will be in the form of decimal numbers. Give your results to three significant figures:
How many cm_t make a cm?
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5 cm_t make a cm
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How many cm_t would a measurement of 3 cm be?
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15 cm_t
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How many cm would a measurement of 13 cm_t be?
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2.6 cms
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Does it depend on where on the ruler the measurement is made?
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No
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How many cm_s make a cm_t?
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.5
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How many cm_s would a measurement of 5 cm_d be?
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4
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How many cm_d would a measurement of 11 cm_t be?
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8.5
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Does it depend on where on the ruler the measurement is made?
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No
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Now answer the following questions about significant figures, including a brief but concise explanation.
Do you think all the significant figures in your result are appropriate? Explain.
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Yes, the ruler is clearly marked
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To how many significant figures are you pretty sure you could answer these questions. Explain.
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3 significant
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What is the smallest number of significant figures for which the last figure would be completely meaningless? Explain
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2?
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&#Very good data and responses. Let me know if you have questions. &#