29.
(c) 3 + ip
The sum of two numbers is 10 and their product is 20, then the sum of their
reciprocals is:
(b) 1/3
(al 12
x
Answers
Step-by-step explanation:
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HomeScienceChemistry
Rubber
chemical compound
WRITTEN BY
Alan N. Gent
Dr. Harold A. Morton Professor Emeritus of Polymer Physics and Polymer Engineering, University of Akron, Ohio. Coeditor of Engineering With Rubber: How to Design Rubber Components.
See Article History
Alternative Title: caoutchouc
ARTICLE CONTENTS
Rubber, elastic substance obtained from the exudations of certain tropical plants (natural rubber) or derived from petroleum and natural gas (synthetic rubber). Because of its elasticity, resilience, and toughness, rubber is the basic constituent of the tires used in automotive vehicles, aircraft, and bicycles. More than half of all rubber produced goes into automobile tires; the rest goes into mechanical parts such as mountings, gaskets, belts, and hoses, as well as consumer products such as shoes, clothing, furniture, and toys.