# Recent content by JSBeckton

1. ### Need to chose a sensor for a presentation

As stated I need to chose a somewhat simple sensor (needs to be fully explained in 3 slides) for a short presentation. I cannot use anything we have discussed at length (accelerometer, strain gauge, thermocouple, LVDT). Any ideas? Thanks
2. ### Engineering Filter circuits

Does the removal of the capacitor make it an amplifier? This would explain the amplified voltage.
3. ### Fluid Mechanics

http://img90.imageshack.us/img90/9176/img062iz2.jpg [Broken] I am having trouble starting excersize 3. If both jets have the same velocity,area, and the same density what would cause the cart to move? If they are mean that the cart is given an intial velocity and I need to give an expression...
4. ### Engineering Filter circuits

It is the circuit in fogure 1 that the other poster linked to. Thanks
5. ### Engineering Filter circuits

Yes, thats is. It started out at about 28 volts and began to decay at about 4000Hz reaching near zero at around 1MHz. We have not dealt with transfer functions, can you be more specific? Thanks
6. ### Engineering Filter circuits

I did a lab using an active low pass filter with an op amp and at the end we were instructed to remove the capacitor that was in parallel with the resistor. The result was an extremely high voltage compared to the voltage with the capacitor in the circuit. We are asked to explain what kind of...
7. ### Laplace Transform

I don't think that is what this theorm calls for, can you verify from th link? He said that he wants us to do it this way even though there are easier ways, go figure...
8. ### Laplace Transform

Sorry, here is the link: http://en.wikipedia.org/wiki/Laplace_transform
9. ### Laplace Transform

Homework Statement Determine L{t sinwt} with the aid of therom 1.31 (its the General Differentiation method on this page: [PLAIN]"link"[/URL] Homework Equations Shown on linked page The Attempt at a Solution I do not understand how to start this becasue I do not have a...
10. ### Polar Coordinates

I understand that as stated in my post under "Relevant Equations", thanks anyways
11. ### Polar Coordinates

Homework Statement The velocity field for a line source in polar coordinates (r,theta) is given by: V=m/(2(pi)r) (in the "e" little r vector direction) convert to cartesian and calculate the strain rate tensor. Homework Equations R=Sqrt(x2+y2); Theta=ArcTan(Y/X); Cartesian...
12. ### Equation for measuring strain

I got it, thanks.
13. ### Equation for measuring strain

DO you know where I can find a derivation of the deformation equation? Thanks
14. ### Equation for measuring strain

Thanks a lot, can't believe I didn't see that!
15. ### Equation for measuring strain

I have a lab where we used the following equation to theroretically measure the strain on a cantilever beam heald stationary at the left end. Measuring back from the right side its length is L2 and the length from the free (right) end to the point where the strain gagues were was L1 (fixed...