Recent content by vipulsilwal

f=-dU/dx integrating both sides 20x^2 -2x^3=-U put x=2 U=-64J change would be 64...and work done would be 64 J

F=-dU/dx use this

Homework Statement 2 capacitors of equal capacitance one charged to potential V, and other completely discharged. when the are connected in parallel what would be the potential of each one of them. Homework Equations E=1/2 (C.V^2) The Attempt at a Solution as they are connected in...

something which gets absorbed does it loses its existence? if not, then number of photons in universe will always remain constant? if no, how they are created?

'gone', does that means they are destroyed?? if that is the case, then for again making a photon(when body radiates energy) there should be some driving force or something that keeps that photon integrated(intact). are there some constituents of photons too?

i have just started studying quantum physics, please clear this doubt energy is in small packets called quanta. when a body absorbs heat(form of energy) these packets are absorbed. so after being absorbed are they destroyed (or disintegrated) or remain in form of packets. i believe it should...

i admit it was wrong... m_G*a have to be include in upward direction.. thanks chipper for correction

i am not getting it. could you please send me the whole solution..

ok sorry.,, usual way of starting such problems is frictional force is acting only on girl . how to determine its direction?,,jst see where girl would slide if there was no friction force. friction force is preventing that to happen...so it is in upward direction... now, balance upward n...

experiment is needed to be done for this air inside balloons is at higher pressure...this outward force is balanced by force due to elasticity of it and atomspheric pressure ... when another balloon comes in contact with other balloon, situation changes..outward force due to that is to be...

sin(theta)*(m_G+m_S)=mu_S*m_G*cos(theta) m_S=m_G(cot(theta)-1) is this correct?

how n+1?? both the n(one of the n! and other of the e expansion) go upto infinity.. so it would expand to: 2pi + 2pi(n) + 2pi(n)(n-1)+ 2pi(n)(n-1)(n-2) +......2pi(n!) 2pi(n!) being the largest one. please, more explanation needed ..

lurch mentioned a good point...

i came across seismicity rate change before major quake.. and also changes in majority of large magnitude earthquake... it is usually seen that before major earthquakes there is first increase in seismicity rate and then a sudden decrease in seismicity...i understand this decrease in seismicity...

even a aftershock is a foreshock for another aftershock... sometimes wind tend to increase stress in the faults... check this link...some people believe in the points given in this site...don't completely believe in them ...these are just their perception...