Chapter 2: Problem 39
Write two conversion factors (two different ratios) to express the fact that there are \(24 \mathrm{~h}\) in a day.
Chapter 2: Problem 39
Write two conversion factors (two different ratios) to express the fact that there are \(24 \mathrm{~h}\) in a day.
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Get started for freeWrite each number in standard notation: (a) \(1.79 \times 10^{-2}\) (b) \(8.76 \times 10^{-9}\) (c) \(4.88 \times 10^{10}\) (d) \(7.52 \times 10^{1}\) (e) \(8.37 \times 10^{\circ}\) (f) \(4.184 \times 10^{4}\)
A student reports a series of five length measurements that are accurate but not precise. Is it more likely that his laboratory technique is very good but the measuring instrument is bad, or that his laboratory technique is bad? Explain.
You overhear a classmate telling another student that \(1 \mathrm{ft}\) equals \(12 \pm 0.5 \mathrm{in}\). Is this statement correct or incorrect? Why?
A student measures the mass of an object three times and reports the numeric average of her measurements. If her three measurements are \(212 \mathrm{~g}\), \(260 \mathrm{~g}\), and \(233 \mathrm{~g}\) and the actual mass is \(235 \mathrm{~g}\), which of the following statements is true: (a) The student is accurate but not precise. (b) The student is precise but not accurate. (c) The student is both accurate and precise. (d) It is impossible to tell whether the student is accurate and \(/\) or precise without knowing how she determined the mass.
A microscopic particle is measured and found to have a \(40.2\) micron diameter. What is its diameter in meters? What is its diameter in nanometers?
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