CHAPTER 1 HOMEWORK

1. (p.14 Ex.1) The age of the universe is thought to be somewhere around 10 billion years. Assuming one significant figure, write this in powers of ten in (a) years, (b) seconds.

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2. (p.14 Ex.2) How many significant figures do each of the following numbers have: (a) 2142, (b) 81.60, (c) 7.63, (d) 0.03, (e) 0.0086, (f) 3236, and (g) 8700?

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3. (p.14 Ex.3) Write the following numbers in powers of ten notation: (a) 1,156, (b) 21.8, (c) 0.0068, (d) 27.635, (e) 0.219, and (f) 22.

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4. (p.14 Ex.4) Write out the following numbers in full with a decimal point and correct number of zeros: (a) 8.69 x 104, (b) 7.1 x 103, (c) 6.6 x 10-1, (d) 8.76 x102, and (e) 8.62 x 10-5.

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5. (p.14 Ex.5) What is the percent uncertainty in the measurement 3.26 + 0.25m?

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6. (p.14 Ex.8) Multiply 2.079 x 102m b7 0.072 x 10-1, taking into account significant figures.

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7. (p.14 Ex.9) Add 9.2 x 103s + 8.3 x 104s + 0.008 x 106s.

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8. (p.14 Ex.12) Express the following using the prefixes of Table 1-4; (a) 106 volts, (b) 10-6meters, (c) 6 x 103days, (d) 18 x 102 bucks, and (e) 8 x 10-9 pieces.

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9. (p.14 Ex.13) Write the following as full (decimal) numbers with standard units: (a) 286.6mm, (b) 85mV, (c) 760mg, (d) 60.0picoseconds, (e) 22.5 femtometers, (f) 2.502.50 gigavolts.

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10. (P.14 Ex.25) Estimate the order of magnitude (power of ten) of : (a) 2800, (b) 86.30 x 102, (c) 0.0076, and (d) 15.0 x 108.

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