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...
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...
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...