If the Radio Lobes of a Radio Galaxy Extend Out

question 54

Essay

If the radio lobes of a radio galaxy extend out to 10 Mpc from the center of the galaxy and the particles in them are traveling at approximately 0.99 c,then how long must the black hole at the center have been ejecting this material into space? Note that 1 Mpc = 3.1 × 10²² m and 1 year = 3 × 10⁷ s.

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Definitions:

Goodenough-Harris Drawing Test

A projective test used to estimate a child's intellectual development based on their drawing of a human figure.

Culture-Fair Test

A psychological test designed to be free from cultural bias, measuring intelligence or other attributes without favoring any particular cultural group.

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Exposure to sensory or informational inputs from the surrounding environment that influences physical or cognitive development and functioning.

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Numerical assessments derived from standardized tests designed to measure human intelligence relative to a statistical normal distribution.