Estimate the Speed of a Galaxy Away from Us If

question 30

Multiple Choice

Estimate the speed of a galaxy away from us if it is 10 billion light-years from us and 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) 0.1c
• B) 0.3c
• C) 0.5c
• D) 0.7c
• E) 0.9c

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Definitions:

Cognitive Development

The process by which individuals perceive, think, and gain understanding of their world through the interaction and influence of genetic and learned factors.

Vygotsky's Theory

A developmental theory proposing that social interaction plays a foundational role in the cognitive development of children.

Sensory Experiences

Interactions with the environment through the senses, leading to perception and possibly influencing cognitive and emotional development.

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