Recent content by puhdanks

does it just become [(percent droped)=e^(t/rc) i will probably be given r and c

well i guess i should have said i think i need to use it and its [q=q(naught)e^(-t/RC)]

I have a test coming up and i know what some question will be on. One question is about the time it takes to discharge a capacitor from "full" to a given point or percent of initial charge. How would i go about doing this. I know the it has to do with the time constant RC and the equation...

Any one?

A is the amplitude x is the space coordinate t is the time coordinate k is the wavenumber ω is the angular frequency φ is the phase constant.

Write the equation of a transverse wave that has a frequency of 75.0 hz, wavelength of .190m,an initial height of .7m and initial transverse velocity of +350m/s traveling in the negative direction.Also sketch at t=0 y(x,t)=Asin(kx+/-ωt+φ) K=33.06 ω=472.4rad/s φ= A= x= y= that's...

I ended up getting .587m does that seem right?

I used k=F/x but when i use the equation T=2Pi(sqrt(M/K) i get a different answer

opps sry lol i have to find from what height the ball was dropped from

The problem is a ball is dropped onto a spring and the spring compresses .95m. The ball then sticks to the spring and oscillates with a period of 1.1 seconds and has a mass of 6kg. I thought that the equation mg(h+x)=1/2(k)(x^2) would be what i would use. I got h=.47m I also...