Recent content by Antoha1

My solution is: ##\frac{1}{2}mv^2=\frac{1}{2}kx^{2} \Longrightarrow x=v\sqrt{\frac{m}{k}}## x=0,354m block gains negative acceleration from spring elastic force so: ##a=\frac{v-v_{0}}{t} ; x=\frac{at^{2}}{2} \Longrightarrow t=\frac{2v_{0}}{v-v_{0}}\sqrt{\frac{m}{k}}\approx 0,14~s## where...

Here is my recent solve checking if I understand it now: Proton's total energy now is kinetic plus rest so E+mc^2, then conservation of law: ##E+(m_{li}+m)c^2=2m_{\alpha}c^2\gamma ~~~~~~~~(1)## Then momentum: ##p=2p_{\alpha}cos\frac{\theta}{2} ~~~~~~~(2)## where p is proton's momentum Then...

do I understand correctly: Relativistic mass is just total energy so the energy ratio is 3Ep=Ea and I can manage everything with 2 first equations

Applying conservation of energy law: Both particles got energy ##A## from eletric fiel: ##A_{p}=eU## and ##A_{\alpha}=2eU##. Lets say particles weren't moving before accelerating them. 1) Proton energy: ##E_{p}=m_{p}c^2+eU## Alpha particle energy: ##E_{\alpha}=m_{\alpha}c^2+2eU## Before...

my other question is: if particle's speed has been increased lets say from 0 to around c, the mass of it increases, lets say rest mass is m and relativistic (with speed) M. Lets say that the particle got energy from electric field E=qV. So conservation of energy would be ##mc^2+qV=Mc^2+K## K is...

ok, so adding rest energy of lithium, but what about rest energy of proton, because I am thinking that only its kinetic E is given according to statement

So basically, mass of lithium given is useless in this problem?

I apply energy conservation law: $$E+(m_{li}+m)c^2=2m_{\alpha}(c^2+\frac{1}{2}v_{\alpha}^2)~~~~~~~~(1)$$ where ##v_{\alpha}## is speed of alpha particle. then I apply the law of conservation of momentum: $$mv=2m_{\alpha}v_{\alpha}cos\frac{\theta}{2}~~~~~(2)$$ Where ##v## is proton's speed before...

If monochromatic light is pointed directly at thin film, film's color can only vary in intensiveness of that particular color of light, because of interference. So, if light is pointed at it, so it is maximum or minimum or neither of interference. The color apeared can only be the color of light...

I am thinking that this problem has a few different answers depending on way of connecting the components. But in the statement it is not said how the components are connected together, so I am asking should I just write all possible or leave it just with series and parallel

okay, but what if components are connected in mixed ways?

Hello. I do not have any literature on this topic because I am still in school and I have not solved any problems about damping vibrations. In school we do not dig into damping vibrations. But I have dug deeper into it on the internet and found some relevant equations but I am still not sure...

Hello. My question is: When a capacitor in LC circuit is out of charge (T/4) does that mean that all electrons left the capacitor or that there is the same quantity of electrons on both plates?

in a triangle,is the angle between the points of contact of the inscribed circle with the sides 120 degrees? From drawings it might be similar to that but I am not sure

Hi, having difficulties in this problem. Looking for ideas. For now, I think the combined voltage of source and coil should be bigger or equal to EMF, for the battery to get charged: ##U+L\frac{dI}{dt}\ge EMF## the current going through the coil, I think, would be...