A Distant Galaxy Is Emitting Light from the Helium Spectrum

question 19

Short Answer

A distant galaxy is emitting light from the helium spectrum at 388.9 nm.On Earth the wavelength of the light from this galaxy is measured to be 540.6 nm.Estimate how far from Earth (in light-years)this galaxy is if the Hubble constant has the value 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)

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Definitions:

Range Of Motion

The full movement potential of a joint, usually measured in degrees of a circle, crucial for assessing and improving joint function.

Proximal Portion

The part of a limb or structure that is closer to the torso of the body.

Exercise

Physical activity that is planned, structured, and repetitive for the purpose of conditioning any part of the body.

Leg Injury

Any form of harm or damage to the leg, ranging from minor bruises to severe fractures or muscle tears.