What does cosmological redshift do to light?

A) stretches its wavelength B) makes it slow down
C) makes it brighter D) makes all light infrared


A

Physics & Space Science

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If a red giant appears the same brightness as a red main sequence star, which one isfurther away?

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Power: A 100-W light bulb is operated by a 110-V dc source. What is the resistance of this bulb?

A. 100 ? B. 8.0 × 10-3 ? C. 6.0 × 10-3 ? D. 120 ? E. 240 ?

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For each 8-km segment of a satellite in close Earth orbit, the "drop" toward Earth is about

A) 5 m. B) 10 m. C) also 8 km.

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A lens that is thicker at the center than at the edge is called a(n) ______________ lens

Fill in the blank(s) with correct word

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