Calculating Hangtime: Equation and Notecard Prep

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AI Thread Summary
The discussion focuses on a request for the equation related to calculating hangtime, specifically for use on a notecard for a midterm exam. The original poster clarifies that they do not need help with a specific problem but rather just the equation itself. A response seeks clarification on the term "hangtime," suggesting that more context about its application may be necessary for accurate assistance. The conversation highlights the importance of providing clear definitions in academic discussions. Overall, the thread emphasizes the need for precise terminology in order to facilitate effective communication and support.
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Homework Statement


i would like the equation for hangtime


Homework Equations



this is what i need

The Attempt at a Solution



i need it for a notecard on my midterm, i don't actually need help on a problem
 
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also...if i posted in the wrong format/thread please tell me so iwont make that mistake again
 
What do you mean by "hangtime?" You might need to explain what problems you apply this equation to beofre you get a reply!
 
Kindly see the attached pdf. My attempt to solve it, is in it. I'm wondering if my solution is right. My idea is this: At any point of time, the ball may be assumed to be at an incline which is at an angle of θ(kindly see both the pics in the pdf file). The value of θ will continuously change and so will the value of friction. I'm not able to figure out, why my solution is wrong, if it is wrong .
TL;DR Summary: I came across this question from a Sri Lankan A-level textbook. Question - An ice cube with a length of 10 cm is immersed in water at 0 °C. An observer observes the ice cube from the water, and it seems to be 7.75 cm long. If the refractive index of water is 4/3, find the height of the ice cube immersed in the water. I could not understand how the apparent height of the ice cube in the water depends on the height of the ice cube immersed in the water. Does anyone have an...
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