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physics.pop-ph2020
Why the same key can open different padlocks?
Fathan Akbar, Mikrajuddin Abdullah
We accidentally observed that one key can open two padlocks from different brands. Based on this observation, here we derived equations to estimate the number of different padlocks…
physics.pop-ph2018
New Equation For Describing Time Dependence of Moon Orbit Radius
Mikrajuddin Abdullah
I derived an equation to describe the dependence of Moon orbit radius around the Earth. I obtained the radius changes with time according to a scaling equation, Moon orbit radius i…