If we have a one-electron atom, and the electron can occupy any of 5 different energy levels, and transitions are possible betwe
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Answer:
Thickness is 217 nm
Explanation:
For a thin film, constructive and destructive interference each has its own effects. Here constructive interference causes the light to be strongly reflected. The thickness can be determined from
here n is refractive index 1.38, m=1 , =0,
=600 nm
Answer:
Angular velocity:
Linear velocity:
Explanation:
When he swings he es ina a circular movement with radius 5.2m. To maintain this circular movement at any time there must be total force on Tarzan equal to the centripetal force:
where m is his mass, r the radius and w the angular velocity. At the lowest point on Tarzan there are two forces acting, gravity and the rope tension, this rope tension equals the force on Tarzan arms:
Where T is the tension on his arms, and W the weigth calculated as:
Where g is the acceleration of gravity. replacing this and remembering that the total force must equal the centripetal force:
Solving for w:
To get the linear velocity at this point: