Homework Statement
A volcano fills the volume between the graphs z = 0 and z =1/(x^2+y^2)^24, and outside the cylinder x^2+y^2=1 Find the volume of this volcano.
Homework Equations
This is a triple integral to be evaluated in cylindrical coordinates.
The Attempt at a Solution...
Alright, I know how to convert from Kelvin to Celsius (subtract 273), but I really don't know how many degrees Celsius are to Kelvin. (I need to convert .021 degK/s to deg/C)
[SOLVED] Change in Temperature and Thermal Energy?
Question- A physicist, upon awaking one morning to find his stove out of order, decides to boil the water for his wife's coffee by shaking it in a thermos flask. Suppose that he uses 420 cm^3 of tap water at 55 degF, that the water falls 1.45...
Homework Statement
0.175 kg of water at 88.0 degC is poured into an insulated cup containing 0.212 kg of ice initially at 0 degC. How many kg of liquid will there be when the system reaches thermal equilibrium?Homework Equations
Qwater=-Qice
q=mc(Tf-Ti)
Cwater= 4187 J/kg degC
Cice=2090 J/kg...
Find the area of the surface obtained by rotating the curve
y=2e^(2y)
from y=0 to y=4 about the y-axis.
Any help on this would be greatly appreciated. This has my whole hall stumped. We know that you have to use the equation 2pi*int(g(y)sqrt(1+(derivative of function)^2), but cannot figure...
[SOLVED] Simple Harmonic Motion (Mass on a Spring)
Homework Statement
A solid cylinder of mass M= 10.8 kg is attached to a horizontal massless spring so that it can roll without slipping along a horizontal surface, as shown in the Figure. The force constant of the spring is k= 346 N/m. The...
Alright. I got you there. My new arithmatic looks like this:
.5kA^2=[.5k(.985^n*A)^2]/2
kA^2=.5k(.985^n*A)^2
2A^2=(.985^n*A)(.985^n*A)
2=(.985^n)^2
ln(2)=.985^n
Ack! I'm truly sorry- it's been a long night and barely anything seems coherent anymore...
(.5k(A*.985^n))/2=.5kA
.5(A*.985^n)=A
A*.985^n=2A
.985^n=A
I feel like I'm missing something there, due to the fact that answer makes no sense. Thanks for baring with me.
Thank you. I do not where to go with that, though, because of having no initial Amplitude. I have, however, derived that I am looking for t=ln(2)/(2*angular acceleration). However, I do not know how to get the angular acceleration without having a known mass value. (a. acceleration=b/2m) Any...
[SOLVED] Dampened Harmonic Motion
Homework Statement
A mass M is suspended from a spring and oscillates with a period of 0.900 s. Each complete oscillation results in an amplitude reduction of a factor of 0.985 due to a small velocity dependent frictional effect. Calculate the time it takes...