Primordial Black Holes Can Have Masses from a Few Grams

question 58

Multiple Choice

Primordial black holes can have masses from a few grams to the mass of a planet. What would be the radius of a primordial black hole with a mass of 10 grams?

• A) about 5 * 10^-36 m; less than the Planck length!
• B) about 0.9 *10^-15 m; the charge radius of a proton
• C) about 3 *10^-15 m; the classical radius of the electron
• D) about 5 * 10^-11 m; the radius of the lowest electron orbit in hydrogen

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Definitions:

Referent

The real object or item in existence that is signified or represented by a word or expression.

Equivalent

Equal in value, measure, force, effect, significance, etc.

Propositions

Assertions or claims that can be evaluated as true or false, serving as the fundamental building blocks of logical arguments.

Theater

A place where live performances of plays, music, dance, or other art forms are presented to an audience.