If the average density of the universe is at least 6 10 27 kg/m 3 ,

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If the average density of the universe is at least 6 × 10⁻²⁷ kg/m³, then the universe w ill eventually stop expanding and begin contracting.

(a) How many electrons are needed in a cubic meter to produce the critical density?

(b) How many protons per cubic meter would produce the critical density? (m_e = 9.11 × 10^-31 kg; m_p = 1.67 × 10^-27 kg)

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Fundamentals of Ethics for Scientists and Engineers

ISBN: 978-0195134889

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Authors: Edmund G. Seebauer, Robert L. Barry

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Question Posted: May 28, 2011 01:47 AM

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If the average density of the universe is at least 6 10 27 kg/m 3 ,

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a N e m 3 6 10 27 kg 1 electron911 1...View the full answer

Fundamentals of Ethics for Scientists and Engineers

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