If a Galaxy Is Receding from Us at 0

question 15

Multiple Choice

If a galaxy is receding from us at 0.10c. Use Hubble's law to estimate the distance to this galaxy if the Hubble constant is 22 km/s per million light-years. (c = 3.00 × 10⁸ m/s, 1 ly = 9.461 × 10¹⁵ m, 1 y = 3.156 × 10⁷ s)

• A) 1.4 × 10⁹ ly
• B) 6.6 × 10⁵ ly
• C) 6.6 × 10⁵ Mly
• D) 2.2 Mly
• E) 1.4 × 10⁷ Mly

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Definitions:

Super-Ego

The strict and demanding part of the mind.

Ego

In psychoanalytic theory, it represents the part of the mind that mediates between the conscious and the unconscious and is responsible for reality testing and a sense of personal identity.

Unconscious Mind

Refers to the part of the mind that is not currently in focal awareness, containing thoughts, memories, and desires that are not readily accessible but influence behavior.

Pleasure Principle

A concept in psychoanalytic theory that describes the instinctual seeking of pleasure and avoiding of pain to satisfy biological and psychological needs.