Recent content by cseet

Hi all, I've this question and I don't know how to go about... can somebody pls assist? thanks question: a cylinder of glass 1cm long has a resistivity of 10E12 ohm meter. how long would a copper wire of the same cross sectional areqa need to be to have the same resistance as the glass...

thanks enigma... I know it's a "silly" question... but appreciate it! cseet

Hi, I'm sorry if this is a really dumb question... how do you compute 10E4.2 on the calculator? thanks in advance.. cseet

Hi all, Pls kindly advise how do I convert Pressure Amplitude of 1E-7 atm to the correct pressure unit (Pa - pascal)? much appreciated cseet

Hi all, can somebody advise on this, Equation: P (change in pressure) = p (density of gas)*w*v*s(max displacement amplitute) P = pwvs Needed to know, is the density of gas always at 1.29kg/m(3)? I've this following qeustion: A piston at one end of a long tube filled with air at...

thanks cookiemonster...you're a gem!

Hi all, I can't seemed to figure this out... question: one end of the string 6m long is moved up and down with simple harmonic motion at a frequency of 60Hz. the wave reach the other end of the string in 0.5s. find the wavelength of the waves on the string. I know wavelength = velocity...

Hi Cookiemonster, that's what I thought, but when I did the equation, the answer I got is 20g but the answer is 15g... can you explain that? thanks cseet

Hi all, can anybody pls explain what is reduce the wave speed by factor of 2? question: original v(string) = 265m/s F (tension) = 500N m (mass) = 0.005kg l (length) = 0.7m Equation: v = sqrt of [F / (m/l)] therefore m = (F * l) / v square but I though reduce speed by the factor...

thanks marcus thanks Marcus, you're a gem! cseet

Hi all, can you pls show me how you rearrange the speed of sound in gas equation from the original equation of: v (sound) = sqr of [(gamma * R * T) / M] I would like to find M, I tried to rearrange it to the following: M = sq of [(gamma * R * T) / v] pls kindly correct me with...

Hi all, I'm stuck on this charge equation: Q=Q * e (-t/RC) = 780 * e (-9.8/3.3) I've got 40.03 but the answer is 15200 if I took away the negative sign from the equation then I'll be able to get 15200. but that should not be the way isn't it? can somebody advise me how should I go...

Hi all, can somebody pls check whether or not I'm in the right direction with my workings and answers. If not, can you pls advise why I've gone wrong? thanks question 1: 1. An inductor has a 54 ohm reactance at 60 Hz. What is the maximum current if this inductor is connected to a 50 Hz...

Hi All, question: A wire of length 1 m has a resistance of 0.3 ohm. it is uniformly stretched to length of 2 m. what is the new resistanct? I'm not sure how to express the concept / equation? pls guide me... Cseet

Hi all, it's me again... sorry but this is the only place where I learn most of my physics from... pls kindly check my answer and for the last part... I found the angle but don't know how to convert it to (rad)... pls guide me...thanks A series RCL circuit with L= 6.5 mH, C=3.7uF, and R =...