Question #70458

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↳Redirected from "An electron in a hydrogen atom drops from energy level n=5 to n=3. What is the energy transition using the Rydberg equation?"

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Answer 1 · 2018-02-06T03:45:49

#b = "28 m"#

Let #a# be the height of the movie screen and #b# the width.

Then, the perimeter of the rectangle is

#P=2(a+b)#

The perimeter is #"80 m"#, so

#80=2(a+b) #

#40=a+b#

But the height is #"12 m"#, so

#40=12+b#

#b=28#