I think I must have made a mistake somewhere because I end up with a negative heat transfer which doesn't make sense.
My integration of dx/A(x) yields (1/PI)*(h/(r2-r1))*(r1+(r2-r1)*x/h)^-1*(-1) between 0 and h. This yields (1/PI)*(h/(r2-r1))*(1/r2)*(-1).
Multiplying this to the opposite...
Thanks so much. This makes it really clear.
Because the area is constantly changing as we move through the cone we must transform the area into terms of one of the available variables, in this case the height. Once this is done we can take the integral with respect to that variable in...
So then can it be said that
q1=k1A1T1
and
q2=k2A2T2
and the overall heat transfer is equal to q1/x?
Or are you saying that q=0?
Or do I need to use constant specific heats to solve this question to get the change in enthalpy and use that to get q?
I'm afraid this has just...
1. The problem statement
A truncated cone 30cm high is made of Aluminum. The dia at the top is 7.5cm, and 12.5cm at the bottom. The lower surface is maintained at 93 deg C, the upper surface at 540 deg C. the other surface is insulated. Assuming 1 dimensional heat flow, calculate the rate of...
Find the volume of a tetrahedron under a plane with equation 3x + 2y + z = 6 and in the first octant. Use spherical coordinates only. The answer is six.
x=psin(phi)cos(theta)
y=psin(phi)sin(theta)
z=pcos(phi)
I've been trying to figure out the boundaries of this particular...