^ That's it, I just had a brain freeze trying to derive the time constant from that exponent expression. Simon's method would produce a more precise value, but my manual specifically asked for an exponential trendline so I just did that and it gave me a close enough estimate for the purposes of...
Homework Statement
Hi, I have a quick question about applying the RC time constant formula for a lab report. In the lab, we charged a capacitor to 20 V and then let them discharge, recording the voltage every 10 seconds, up to 240 sec. Now I was asked to graph the time vs. voltage in excel...
(Sorry for the super late reply)
You're right, that's a terrible way of getting Ksp. All my classmates got equally far-off results, but there wasn't anything to be done about it the way the lab was designed. Still, I got an A, so go figure. :)
Homework Statement
I have to calculate the Ksp value for calcium hydroxide from experimental data. We titrated 10.00 mL of saturated Ca(OH)2 aqueous solution with 11.00 mL of 0.01607 M EDTA.
Homework Equations
The Ksp formula is given in my manual as [Ca^2+]*[OH^-]^2
The Attempt at...
Homework Statement
Hi,
I'm studying electric charges and fields, and I have a quick question about this example in my book:
Everything is straightforward except the subscripts (13 and 23) on r in the denominators of initial Coulomb equations for F1 and F2. In the next step they just...
I converted the masses to Newtons to get 833N for the beam and 4214N for the box. Then I used trig to get the length of the beam (3m) and the angles: 37degrees below the beam and 53 above. Then I tried this, based on an example from my class notes (assuming the center of the beam's gravity is in...
Hi,
I have the following problem that I'm lost on.
The answer is 41.4 rad/s2 but I don't understand how to arrive at it.Homework Equations
ƩT=I(alpha)
I=1/3 ML2 for a rod with axis through one end.
The Attempt at a Solution
I solved the above equations to get (alpha)=T/I, but no matter what...