Essential University Physics: Volume 1 (4th Edition)

Published by Pearson
ISBN 10: 0-134-98855-8
ISBN 13: 978-0-13498-855-9

Chapter 1 - For Thought and Discussion - Page 12: 1

Answer

Please see the work below.

Work Step by Step

We know that the international unit kilogram for mass is made of special platinum-iridium alloy which is very hard. However, in any event comparison with such a standard is less convenient than an operational definition which can be checked at laboratory. Additionally, the laboratory measurements give more precise values.
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