Recent content by Hevonen

I agree with you - I have tried to indicate by the red circle that weak interaction act also between handrons and leptons. Currently, I am finishing my last 3 days of IB final exams, and after that I will move on to St Andrews university. I completely agree with you. I have tried to make a...

Thank you! Your comments really put me on the right track, particularly with my Giangoli Physics textbook and with this particle Physics: boson as a name happens to occur many times, and it is not only related to a force carrier of weak nuclear interaction. I made some improvements to the...

Thank you for your comments! I attached figure that indicates now what I think about EX particles and forces. I put electron, proton, neutrons and mesons to hadrons - is that right? I think so that neutrinos should also belong to lepton but this is missing in the figure. Please, comment if...

[SOLVED] Particle Physics, perhaps a classification problem Homework Statement How are the classes of particles classified? The Attempt at a Solution Classes of particles should be bosons, leptons, hadrons and baryons. First, I had the idea that the particles are classified according to...

Your reasonings clarify the question thoroughly. So the key to this question is that the reading in the scale = normal reaction force. Thanks for both of you!

You have the point, but why the outcome is the same although Mandy is accelerating (R > W)? It seems that the scale always records the reaction force.

They measure my weight that is the gravitational force. I considered that my weight = reaction force from the scale R.

It must be R. But how can the reading be the same when stationary and when moving?

[SOLVED] Lift, reading on the scale Homework Statement Mandy stands on a weighing scale inside a lift (elevator) that accelerates vertically upwards. The forces on Mandy are her weight W and the reaction force from the scale R. The reading of the scale is A. R + W. B. W. C. R. D. R – W. The...

Thank you! Your both answers solve this problem: photon is massless and it has momentum due to relativity.

[SOLVED] Annihilation, perhaps a defination problem Problem: An electron and an anti-electron undergo mutual annihilation. Which of the following does not have to be conserved? A. Electric charge B. Kinetic energy C. Lepton number D. Momentum Attempt to question: The answer is B but...

Thanks!

Yes indeed. That is the right method to solve this. Thank you!

[SOLVED] Coal liquification What is the chemical formula for coal liquification?

[SOLVED] Blast furnace and oxygen converter FACT: Scrap metal is added to the basic oxygen converter to control temperature in the production of steel from pig iron. QUESTION: How can one control the temperature in the production of pig iron in the blast furnace? Scrap metal or something?