Recent content by natives

I don't cheat,I've never cheated,this not an exam,am never going to be asked to derive this!But thanks for the insight...Yes am checking it through,seems to go in the right direction but it won't get me there...The reason why I need the historical background of this formula is because I'd like...

Sort of...But more so because in most of these cases (ballistic pendulum) conserve both linear momentum and kinetic energy...which was a condition you were required to fulfill in the question!

I'd first cancel out E and D because the question of momentum does not apply...Do you see?I'd also cancel out C,because the object is?Fixed!Its velocity doesn't change and if it does then they would have been irregular energy losses,same applies to B in which we are not so sure the car will...

The grammar in which the question was asked is slippery..Because first off current doesn't flow through or across a capacitor,it just builds up,charge is stored...If this is a problem from a physics textbook then revisit the account taking in mind the plasma could just be another dielectric...

f(x) :the reply has been irrelevant and out of field...you either understood the problem or did not,thats what matters...Caracrist:tight game,we could probably involve "probability" to see chances of survival?thats 1 among the steps I know there should still be more to process,but just...

What level of approach is it required to approach this problem?Because I think it would be approached by a university student perhaps different from a high school student,so please be specific!..Also I think YES it makes more sense "practically" to use the density of sea water than plain...

What level of education should you want this be done,I think it can done differently by a high school student from a university student!Specify your need...Also i think YES "practically" it makes more sense to use the density of see water,but if it is a textbook problem then observe how other...

First correct your calculation for the window area...You used r=40 cm but that is given as the diameter!

Meant N (Newtons) not T whateva that might be because its not the Tesla!

Meant N (Newtons) not T whateva that might cause its not the Tesla!

..I don't know,I kinda got the answer as 94.16 N! Taking the formula for wave in strings {because violin is a string instrument,not an organ pipe instrument so you can't use v as velocity of sound in air as when it would be with organ pipe instruments but with strings v=fk=2fl where...

Its all a matter of REFERENCE...the mirror effect is an issue of the 2 reference planes...While the answer and its way of answer just depends on the reference views of the reader...We are right AND we are all wrong,what determines this is who views these ideas i.e what is the reference...I don't...

Remember v1 is the velocity of the first cube whose initial kinetic energy .5m1v1^2 you had substitute with m1gh...So even though you didnt know it but u had let .5m1v1^2=m1gh..cant you make v1 a subject out of this and substitute it in your momentum equation?then u'd 2 simultaneous equations...

Remember v1 is the velocity of the first cube whose initial kinetic energy .5m1v1^2 you had substitute with m1gh...So even though you didnt know it but u had let .5m1v1^2=m1gh..cant you make v1 a subject out of this and substitute it in your momentum equation?then u'd 2 simultaneous equations...

Remember v1 is the velocity of the first cube whose initial kinetic energy .5m1v1^2 u substitute with m1gh...So even though you didnt know but u had let .5m1v1^2=m1gh..cant you make v1 a subject and substitute in your momentum equation?then u'd 2 simultaneous equations which am sure you can...