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A right circular cone is made from of a radius of 5 cm, a central angle of 216 degrees, what is the volume of the cone in cubic cm?

We observe a galaxy at z = 1, and a quasar at z = 2. What is the redshift of the quasar as observed from that galaxy? Enter a numeric answer.

A galaxy with an apparent magnitude in the V band (λc ~ 5550 angstroms, width δλ ~ 800 angstroms) of mV = 22.5 mag is observed with the Palomar 200-inch telescope. How many photons per second are collected from this galaxy over the 200-inch (~ 500 cm) dia...

Water is lifted from a well of depth 50m. If mass of water is 20kg and that of the rope is 0.2kg per metre the amount of work done is

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passive voice; The paper makes the boat. that is the correct form

Entropy decreases.becoz 1more oxygen atom is added into O2 gas so compactly arrange and randomness decreases.