A 0.70 kg ball on a 0.20 m string rotates in a circular path in a vertical plane. If a constant angular speed of 3.0 rad/s is maintained, what is the tension in the string when the ball is at the top of the circle? A. 0.8 N
B. 3.33 N
C. 5.64 N
D. 11.6 N

the total distance that martina travels that day is

(distance from home to mom's office) plus (distance from mom's office to school)

plus (distance from school to library) plus (distance from library to friend's house)

plus (distance from friend's house to martina's house).

(we don't know what any of these distance actually is.)

as we know our atmosphere or air have different levels. every level has other gasses, and every gas has another permeability. when the light comes from lower permeability to higher permeability, it changes its direction. so that means that when the light comes from the moon to the earth, it changes it's direction many more times. it basically means that the shape of the light part of the moon is changed on the earth.

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