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When solar wind brings high energy neutrons into contact with Nitrogen-14, a well known process occurs yielding Carbon-14 + a proton. N14 is assumed to exist in upper atmosphere as...
Asked on 10/02/2021
1 answerPlease forgive my lack of artistic ability, but here's my question:Consider that a...
Asked on 10/02/2021 by MegaMark
6 answerHuman beings invented the wheel to get rid of the friction between the wheel and the road. But were we able to reduce it to zero? Is there any residual...
Asked on 10/02/2021 by hkBattousai
5 answerYesterday, while studying a simple question, a rather strange doubt hit my mind:Consider a ball of mass $m$ moving with velocity $v$ that collides with a wall in a perfectly...
Asked on 10/02/2021 by user375072
4 answerWhen driving a car on ice, there is a danger of slipping, thereby losing control of the car. I understand that slipping means that as the wheels rotate, their circumference...
Asked on 10/02/2021
6 answerMy question is very simple. Can we use electrostatic force of repulsion to project objects; By charging that object(movable) with the same charge to another static object (non moving) in...
Asked on 10/02/2021
1 answerWhy and how does negative velocity exist? I have read on the internet about negative velocity but I still don't understand how it can even exist since time is...
Asked on 10/02/2021 by Andrej Slavejkov
6 answerAccording to Newton's third law of motion that states that every action has an equal and opposite reaction. So, if the Earth exerts a gravitational pull on us (people) then...
Asked on 10/02/2021
8 answerHow does Feynman get to $D^2_{N-1}$? The expected value of $D^2_N$ for $N>1$ can be obtained from $D_{N−1}$. If, after $N−1$ steps, we have ...
Asked on 10/02/2021
1 answerAs far as I know, darts, arrows, and airplanes have the center of gravity(CG) ahead of their center of pressure(CP) and often have fins at the rear to achieve stability....
Asked on 10/02/2021
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