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course phy 121
2/8 7:46
Which is longer, one cm_d or one cm_s?****
#$&* 1 cm_d = 2.5 cm
1cm_s=1.5 cm
1 cm_d is longer
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Which is longer, the one that it takes 2.5 of to span a cm, or the one it takes 1.5 of?
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Which is longer, one cm_s or two cm_t?
**** 2 cm _t = .5 cm
1cm_s=1.5 cm
1cm_s is longer
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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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1 cm=3.70 cm_t
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How many cm_t would a measurement of 3 cm be?
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21.2 cm_t=3 cm
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How many cm would a measurement of 13 cm_t be?
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3.50 cm= 13 cm_t
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Does it depend on where on the ruler the measurement is made?
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yes, because the sides are cut off short.
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How many cm_s make a cm_t?
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0.40 cm_s= cm_t
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How many cm_s would a measurement of 5 cm_d be?
****3 cm_s=5 cm_d
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How many cm_d would a measurement of 11 cm_t be?
****7.40 cm_d=11cm+t
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Does it depend on where on the ruler the measurement is made?
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It does because the sides are cut off short.
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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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no, because some of the results were hard to put into three figures.
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To how many significant figures are you pretty sure you could answer these questions. Explain.
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I believe two significant figures would be suffice.
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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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One because it would not accuratly denote the number.
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&#This looks good. Let me know if you have any questions. &#