Recent content by janrain

how do i find the laplace transform of the following error function without using tables? f(t)=erf(t^(1/2)) i've been trying really long but i seem to be stuck in a loop of erf

question: the mean life of radium(226) is 1600 yrs and that of radon (222) is 3.9 days. calculate volume of radon gas that will be in equilibrium qith 1 gram of radium. what i don't understand is how do i relate volume to this?

thanks a lot. that helped.

i don't know how to proceed. don't know the formula/what needs to be done to derive it.

problem: in a spectrometer, one half of the slit is illuminated with mercury light and 2nd half illuminated with white light through a fabry-perot etalon. in the wavelength range of 4000 to 5000 angstorm , 20 fringes are observed in the continuous spectrum. calculate the plate separation of...

I would like to know how can one show that the area of a B-H curve, ie hysteresis loop, denotes the energy dissipated per unit volume during magnetising cycle. I can't find this anywhere and need it urgently. Thanks for any help. Kavita

right...thank you

Does the following equation mean that electric field E and magnetic field B are always perpendicular?? the equation is: Curl E = - (partial derivative of B with respect to t) where E is time dependent too.