Well if, say, the pump is used to pump water out of a lake or a well, would it need to overcome the 'force' of gravity?
I've always thought about it in terms of pressure head and making sure the available head is greater than the potential losses (frictional + elevation changes).
Basically I...
I am familiar with the idea of pump head and system pressure losses, pump curves etc.
However, a friend was asking about the relationship between static pressure, force and acceleration.
For example, if the pump supplies a certain pressure (P) at a given flow rate, is there not a force...
Although a complete cost analysis is much more complicated, the particular question only requires the following: an energy cost estimate (in terms of $/Joule).
This was directed to be done by taking volumetric or mass based costs of each fuel as well as the associated energy conent or energy...
Homework Statement
This problem involves a sketch of a system of resistors, so I will do my best.
A--xx1xx---|---xx1xx--B
.\.....|..../
...x...x...x
...x...x...x
...3...1...5
...x...x...x
...x...x...x
...\...|.../
.....\.|./
...\/
The numbers between the x's represent the...
I am a little confused by the question. Like the original post, I can't see how the fly's height would mean anything. If anything, wouldn't this just cause the spring to release slightly?
Sure,
The temperature coefs of resistivty on Table 27 (in the textbook) were determined at 20 degrees C. What would they be at 0 degrees C. Calculate the coefs for silver, copper and gold (all in table, resistivity is also in the table for each). Note that the temperature coefficient of...
I'm stuck on a problem. It involes the temperature/resistivity relationship formula:
\rho = \rho_0 (1 + \alpha (T - T_0))
In the problem I am given the value of \alpha and \rho_0 and I am told that these values were found at 20 degrees Celcius. I am asked to find the coefficient \alpha^'...
I'm working on a problem in which I'm asked to find the ratio of alpha particles scattering at any angle (assuming equal numbers of scattering nuclei per unit area)
now I realize that nt = scattering nuclie per unit area. Does this mean that the above restriction sets nt to 1? Wondering...
I actually already attempted to solve using the x=Rtan(\theta)method before I posted and came up with:
\int_{x=0}^{x=h}tan(\theta)sec(\theta)d\theta
which i believe gave:
\left\frac{1}{cos(\theta)}\right_{x=0}^{x=1}
now I know when x=0 tan = 0, but waht about x = h which is a...
Ok, apparently it's been a while since I've had to deal with an integral like this, seems like it should be easy but I can't find a substitution that will work. The integral is:
\int_{0}^{h}\frac{dx}{(x^2+R^2)^\left1/2\right}
Where R is a constant.
Any hints (or solutions if you're...
Here's the problem:
An infinately long cylinder of radius R has a volume charge density that varies with the radius as p = p0(a-r/b) where p0, a and b are all positive constants amd r is the distance from the axis of the cylinder. Use Gauss' law to determine the magnitude of the electric...
I have two identical rods with length 2a with charges +Q.
Both rods are on the x axis. One is centered at (0,0) so that it ranges from (-a to a) and then other has a center at (b,0) which ranges from
(b-a to b+a). The question asks what is the force exerted by the left rod on the right rod...
Ok, say there is a space probe orbitting the sun at 1 AU and it needs to be put in an orbit that will encounter Mars using the least amount of energy. The orbit hsa perihelion at Earth's orbit and apelion at mar's orbit. In the problem we are asked to solve for stuff like the eccentricity of the...