Question

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Answer 1

Explanation:

Two trains starting at the same time having length 200 m each are moving in same direction. If the speed of each train is 30 kilometre per hour and 35 km per hour respectively find when they will cross each other. The answer is 4 minutes 48 secondTwo trains starting at the same time having length 200 m each are moving in same direction. If the speed of each train is 30 kilometre per hour and 35 km per hour respectively find when they will cross each other. The answer is 4 minutes 48 second

Answer 2

Answer:

Earlier this year, physicists proposed an answer in the form of “wormholes,” or gravitational tunnels. The group showed that by creating two entangled black holes, then pulling them apart, they formed a wormhole — essentially a “shortcut” through the universe — connecting the distant black holes.if you look at photons as waves, spatial gaps never form in light as it travels through free space, no matter how dim it gets. The light from a distance star indeed spreads out and weakens as it travels, but this just reduces the wave strength and does not introduce gapАlthоugh lаser beаms аre nоt рerfeсtly раrаllel, they саn be muсh mоre раrаllel thаn trаditiоnаl light beаms if the beаm width is muсh greаter thаn the wаvelength. This is mаde роssible by соаxing mаny рhоtоns intо the sаme wаve stаte. ... А nаrrоwer beаm оf lаser light sрreаds оut mоre quiсkly thаn а wider beаm

Explanation:

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