Can 96-Cm-247 Undergo Alpha Decay?

dcarmichael
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Homework Statement
We are asked to calculate the half life of 96-Cm-247 using equations from class, and to compare this calculated value to the real value. When comparing there appears to be a very large discrepancy. I'm wondering if this is to be expected or if there is a calculation error on my part. Ill attach my attempt at a solution
Relevant Equations
attached
nuclear 1.jpg
Nuclear 2.jpg
 
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I am unable to read your attachments. I suggest you type in your calculations. Try to use latex.
 
thank you I will update it.
 
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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