Concept explainers
Explain why measurement standards based on laboratory procedures are preferable to those based on specific objects such as the international prototype kilogram.
To explain: the reason for giving preference to laboratory procedures than based on specific object.
Explanation of Solution
Refer the three fundamental quantities are namely length, measured in meter in Earth’s size, mass in kilogram in amount of water, and the time in second by the length of the day.
The laboratory experiments give the operational definitions on the measurement standards. The operational definitions will give the same results anywhere in the earth with exact values. In the basic quantities, the length and time comes under the operational definitions.
The operational definition by laboratory procedures gives the exact value to a particular constant and meter was the first such quantity.
In order to get the long-term stability and the invariant physical constant is the correct solution. This can be achieved by laboratory experiments.
Therefore, the laboratory procedures are preferred instead of specific objects.
Want to see more full solutions like this?
Chapter 1 Solutions
Essential University Physics: Volume 1 (3rd Edition)
- Which of the following metric prefixes is the smallest? (a) micro- (b) centi- (c) nano- (d) milli-arrow_forwardThe 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, 7.9102m could be written either as 7.9cm or 79mm . (a) 7.9107m : (b) 0.0074m ; (c) 8.81011m : (d) 1.631013m .arrow_forwardUnits and Standards Identify some advantages of metric units.arrow_forward
- Units and Standards What are the SI base units of length, mass, and time?arrow_forwardThe following masses are given in kilograms. Use metric prefixes on the gram to rewrite them so the numerical value is bigger than one but less than 1000. For example, 7104kg could be written as 70cg or 700mg . (a) 3.8105kg ; (b) 2.31017kg ; (c) 2.41011kg ; (d) 81015kg ; (e) 4.2103kg .arrow_forwardWrite the following quantities in standard units. (a) 0.55 Ms (b) 2.8 km (c) 12 mg (d) 100 cmarrow_forward
- State how many significant figures are proper In the results of the following calculations: (a) (106.7)(98.2)/(46.210)(1.01) ; (b) (18.7)2 ; (c) (1.601019)(3712)arrow_forwardThe following times are given in seconds. Use metric prefixes to rewrite them so the numerical value is greater than one but less than 1000. For example, 7.9102s could be written as either 7.9cs or 7.9ms . (a) 9.57105s : (b 0.045s ; (c) 5.5107s ; (d) 3.16107s .arrow_forwardThe following masses are written using metric prefixes on the gram. Rewrite them in scientific notation in terms of the SI base unit of mass: the kilogram. For example, 40Mg would be written as 4104kg . (a) 23mg ; (b) 320Tg ; (c) 42ng ; (d) 7g ; (e) 9Pg .arrow_forward
- Which is the standard unit of mass in the metric system? (1.4) (a) gram (b) kilogram (c) slug (d) poundarrow_forwardThe 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, 4.2Pm would be rewritten as 4.21015m (a) 89Tm ; (b) 89pm ; (c) 711mm ; (d) 0.45m .arrow_forward
- Glencoe Physics: Principles and Problems, Student...PhysicsISBN:9780078807213Author:Paul W. ZitzewitzPublisher:Glencoe/McGraw-HillPrinciples of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningUniversity Physics Volume 1PhysicsISBN:9781938168277Author:William Moebs, Samuel J. Ling, Jeff SannyPublisher:OpenStax - Rice University
- An Introduction to Physical SciencePhysicsISBN:9781305079137Author:James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar TorresPublisher:Cengage LearningCollege PhysicsPhysicsISBN:9781938168000Author:Paul Peter Urone, Roger HinrichsPublisher:OpenStax College