Recent content by HZXAHNLfzjSr

Thanks, but can you show me the steps?

Homework Statement A particle is oscillating in simple harmonic motion with period 4.5 ms and amplitude 3.0 cm. At time t = 0, the particle is at the equilibrium position. Calculate, for this particle: a) frequency b) the angular frequency c) the maximum speed d) the maximum acceleration e)...

Thanks I figured it out and just confirmed it with your posts ;)

Well I am still unsure as to how to do part (c) :( Can someone show me the steps? Thanks!

Thanks for the welcome. I've returned as I'm still unsure regarding ½mv2 = mdeltaφ I've thought about it and I just don't understand this equation, especially the "m/mass" part. I'd appreciate it if you could explain it to me again :P Thanks!

Also can someone tell me if it's V = (Vo)(e) - (t/RC) OR V = (Vo)(e) ^ - (t/RC) In the latter case, kindly explain how I'd solve this to get V. Thanks!

Homework Statement A voltmeter of resistance 150kilo Ohms is connected across a 50 micro F capacitor. If at time t= 0 the voltmeter reading is 20V. Find a) charge on capacitor at time t=o b) voltmeter reading after 10s c) the time which must elapse after t = o before 95% of the...

Oh my god I am so clumsy :D Thanks a lot for your detailed reply ;) I've got most of it!

Thanks for your quick and clear reply ;)Nevermind, there still one issue, in the bold part, how come the examiner has taken 6.4 x 10^6 instead of 6.4 x 10^3 ?

The Earth may be assumed to be an isolated sphere of radius 6.4 × 103 km with its mass of 6.0 × 1024 kg concentrated at its centre. An object is projected vertically from the surface of the Earth so that it reaches an altitude of 1.3 × 104km. Calculate, for this object: (i) the change in...