Recent content by ThomasHW

Probably. I've had to use RC for a high-pass and low-pass filter, but I guess that's because of they have a cut-off frequency. I guess I'm confused as to when RC and when to use 1/jwc.

If I had a voltage Vg = 2cos(105t) V going into the op-amp, would I still use 105 rad/s as my angular velocity, or \frac{1}{RC}?

Does it change anything if the circuit involves an op-amp?

For a capacitor in an AC circuit, does \omega = \frac{1}{RC} always? I have voltages such as Vg = 2cos(105t) V. When finding the capacitance using the formula C = \frac{1}{jwc} would I use \omega = 105 or would I use \omega = \frac{1}{RC}?

I'm trying to solve for a number of different currents in a circuit, and I'm wondering how to do KVL with a current source in a loop? The current source is actually part of two loops, so is it possible to just name the current source 'V' during KVL and add (or subtract) the two resulting...

Thank you for the help! :)

What does projecting the line of action of the force tell me about the sign convention? I'm working along a problem in my textbook which is exactly the same, except the angles and forces are SLIGHTLY different. It has Ay and B as being negative, and Ax as being positive. I figured out how Ay...

Another question... is B negative? If so, can you explain why?

Ahh, okay. So I have the 34kN sign convention correct? It's kind of confusing deciding which way you think it'll go.

Isn't the y-component trying to rotate it counterclockwise, while the x-component is trying to rotate it clockwise?

Homework Statement http://www.tunerspec.ca/school/question_oct16.jpg Homework Equations M=FD The Attempt at a Solution http://www.tunerspec.ca/school/work_oct16.jpg I'm having trouble solving for B by adding the moments about the point A. I am getting an answer of 4.31kN...

Haha, well that means I got the question wrong. Damn. Tsin30^{\circ} - 752N = 0 344N - Tcos30^{\circ} = 0 ?

No, we haven't. Either our professor is assuming we've been taught this before... or... I'm not sure. That is why I really don't understand this question.

The two longitude's and the two latitude's... I'm not seeing how you can use the dot product with four angles...

Is the answer 752N?