Since White holes aren't hugely discussed and talked about in decades compared to black holes, what may be the characteristics and properties that makes a white hole the antithesis (the complete opposite) of a black hole although white holes are completely hypothetical?

You notice a very one-dimensional-thinking snail crawling along one rail of a railroad track. naturally, you remove it to a safer place. but before you do, you observe it as it moves from position xi = -92.9 cm to position xf = -64.9 cm along the rail, as measured from a point where one rail abuts the next. what is the snail\'s displacement δx in centimeters?

The a metal retainer that keeps the rolling elements evenly spaced. n a. seal n b. separator n c. bearing n d outer race

How many molecules are present in 3 mols of silicon dioxide (sio2)?