Inquiry into Physics
8th Edition
ISBN: 9781337515863
Author: Ostdiek
Publisher: Cengage
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Chapter P, Problem 2CA
What were the first standards of mass and length specified under the metric system originally adopted into law in France in 1795?
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The following lengths are given using metric prefixes on the base SI unit of length: the meter. Rewrite them in scientific notation without the prefix. For example, 4.2 Pm would be rewritten as 4.2 × 1015 m. (a) 89 Tm; (b) 89 pm; (c) 711 mm; (d) 0.45 μm.
The following lengths are given in meters. Use metric prefixes to rewrite them so the numerical value is bigger than one but less than 1000. For example, 7.9 × 10−2 m could be written either as 7.9 cm or 79 mm. (a) 7.59 × 107 m; (b) 0.0074 m; (c) 8.8 × 10−11 m; (d) 1.63 × 1013 m.
The Apothecary system of units was used in Britain and the US until 1858. Given the density of water is approximately 28000g/ft3 and the relationships below, show all you work in calculating the density in apothecary pounds per pint. In the Apothecary system of units, gallons, quarts and pints are equivalent to those in the English system of units. 1 grain = 0.0.065 g, 20 grains = 1 scruple, 3 scruples = 1 dram, 8 drams = 1 apothecary ounce, 12 apothecary ounces = 1 apothecary pound.
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- In general, when a derived unit becomes complicated (involves too many standard units), what is done?arrow_forwardA sidewalk is to be constructed around a swimming pool that measures (10.0 0.1) m by (17.0 0.1) m. If the sidewalk is to measure (1.00 0.01) m wide by (9.0 0.1) cm thick, what volume of concrete is needed and what is the approximate uncertainty of this volume?arrow_forwardA commonly used turn of mass in the English system Is the pound-mass, abbreviated Ibm, where 1 Ibm = 0.454 kg. What is the density of water in pound-mass per cubic foot?arrow_forward
- Units and Standards What are the SI base units of length, mass, and time?arrow_forwardA popular saying is Give him an inch, and hell take a mile. What would be the equivalent saying using comparable metric units?arrow_forwardFor a given speed limit, would the numerical value be greater in mi/h or in km/h?arrow_forward
- Write the following quantities in standard units. (a) 0.55 Ms (b) 2.8 km (c) 12 mg (d) 100 cmarrow_forwardIn a football game, you often hear the expression first and 10 (yards). How would you express this measurement in meters to a friend from Europe?arrow_forwardOne student uses a meterstick to measure the thickness of a textbook and obtains 4.3 cm 0.1 cm. Other students measure the thickness with vernier calipers and obtain four different measurements: (a) 4.32 cm 0.01 cm. (b) 4.31 cm 0.01 cm, (c) 4.24 cm 0.01 cm, and (d) 4.43 cm 0.01 cm. Which of these four measurements, if any, agree with that obtained by the first student?arrow_forward
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