Recent content by the one

Before Posting This , I spent nearly an entire day googling the problem of virtual particles and the conservation of energy , but it only got me more confused :confused: Let's review this problem from the beginning : Due to Heisenberg's uncertainty relation between time and energy \Delta t...

hi i have a problem with the the proof of faulhaber's formula given http://planetmath.org/encyclopedia/ProofOfFaulhabersFormula.html" how is \left(\sum_{k=0}^{\infty}\frac{n^{k+1}}{k+1}.\frac{x^k}{k!}\right)\left(\sum_{l=0}^{\infty}B_{l}\frac{x^l}{l!}\right) equals...

I Heard That the gamma function explains the strong nuclear force . \Gamma \left( z \right) = \int\limits_0^\infty {t^{z - 1} } e^{ - t} dt How does it explain the Force? Thanks

ya zeitghost you are right , It's 100mA I must have been mixed it with another . Thanks .

Hi Everyone , Beckman44 , I Understand That you need to produce pulses as fast as possible , So you need to use an astable circuit like the one in the attachments . There are Some Equations Control The Properties of the pulses and they are : ( The frequency Equation ) \[ f =...

Thanks a lot Man . But My Datasheet doesn't have a Safe Operating Area plot , and don't ask me How ! I'll Try to get another one Thanks again

Hi , Everyone I'm learning how to read datasheets , amd i have a question about this . In the datasheet of the transistor BC238 , in the Absolute Maximum Ratings the Ic = 10mA Does That mean that i can't get an Ic output = 1000mA . Thanks .

Sorry , It'll be 1/12 (won't it ??) \[ \begin{array}{l} \int\limits_0^1 {\int\limits_0^x {\int\limits_0^y {ydzdydx = \int\limits_0^1 {\int\limits_0^x {\left( {\int\limits_0^y {ydz} } \right)} } } } } dydx = \int\limits_0^1 {\int\limits_0^x {y^2 } dydx} \\ = \int\limits_0^1 {\left(...

I knew that i was wrong

hi everyone the integral is : \[ I = \int\limits_0^1 {\int\limits_0^x {\int\limits_0^y {ydzdydx} } } \] I'm not sure about the answer , but i think it'll be \[ \frac{{x^3 }}{3} \] am i right ? thanks

Hi Chris Hillman I tried to think in different ways but I didn't arrive at any thing. So can you tell me how to fix this problem thanks

Hi assume that a Cylinder with radius \[ R \] , proper mass \[ M_0 \] and height \[ h \] which is rotating at a constant angular speed \[ \omega \] In order to calculate the relativistic mass we use the proper mass element to calculate the relativistic mass element , so : \[ dM =...

Hi I have a simple question in GR we can claculate the gravitational acceleration of the black hole with the Equation : \[ a = \frac{{GM}}{{r^2 \sqrt {1 - \frac{{r_s }}{r}} }} \] now , the acceleration of a mass which falls into the black hole at the event horizon (when \[ r = r_s...