Consider two bodies A and B of masses m1 and m2 moving along the same straight line in the same direction with velocities U1 and U2. The bodies A and B suffer a head on collision when they strike and continue to move along the same straight line with velocities V1 and V2 respectively. Assume the collision is elastic, a. Show that U1 + V1 = U2 + V2 b. Find the expression for V1 and V2 in terms of other parameters.​

This is what i found on google “lithium and sulfide can react together to form litium sulfide(li2s). when lithium sulfide hydrolyses(breaks down) in air, it releases hydrogen sulfide which is characteristized by a rotten egg odor.” i hope this you for what your looking for

Neptune is the eighth planet from the sun. it was the first planet to get its existence predicted by  mathematical calculations  before it was actually seen through a telescope on sept. 23, 1846. irregularities in the orbit of  uranus  led french astronomer alexis bouvard to suggest that the gravitational pull from another celestial body might be responsible. german astronomer johann galle then relied on subsequent calculations to   spot neptune via telescope. previously, astronomer galileo galilei sketched the planet, but he mistook it for a star due to its slow motion. in accordance with all the other planets seen in the sky, this new world was given a name from greek and roman mythology — neptune, the roman god of the sea.

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