Recent content by washablemarker

ah. figured it out. i had worked out the values mentally real quick and hadn't realized that i needed to use the double angle trig formula. sheesh. yet another simple algebra mistake. is there a way i could mark this for deletion or something? by the way, thank you. sometimes it can be difficult...

[SOLVED] Sketching the Curves of a Function W/In an Interval - Simple (1st Year Calcu Homework Statement Sketch the graph of the function on the interval [0, 2pi]. y = cosx - 1/2(cos2x) Homework Equations The Attempt at a Solution so the problems that i have been practicing...

yes. somewhat too late though. this had been a test question and i hadn't realized they are just wires. in case anybody needs it. http://img220.imageshack.us/img220/4162/explanationwhyia9.th.png

http://img151.imageshack.us/img151/7763/isthiscorrectgr1.th.png correct me if I'm wrong. the resistors in red are in parallel, so you can add them together with the equation of parallel resistance. then the resultant would be in series with the blue resistor, so you could simply add them...

so would that basically be a useless wire. in most situations anyway. but in the new diagram, there would be no short circuit. (oops. sorry bout the double post. i meant to edit.)

the path of least resistance.

oh, i see. but what do you mean by short circuit? http://img82.imageshack.us/img82/3195/resistorproblembt3.th.png edit: crap, i left something out. the problem was actually like the picture above. basically the same thing though. so could i redraw the picture as to simplify it like this...

Homework Statement http://img91.imageshack.us/img91/8346/resistorproblemim2.th.png Find the equivalent resistance. Homework Equations equation for resistance. the variation used was 1/Rtotal = 1/R1 + 1/R2 + 1/R3 + ... The Attempt at a Solution i have no idea how to add the diagonal in.

yeah thanks. i figured it out minutes after. it's basically just electric field against gravity. thank you.

Homework Statement Robert Millikan received a Nobel Prize for determining the charge on the electron. To do this he set up a potential difference between two horizontal parallel metal plates. He then sprayed a drops of oil between the plates and adjusted the potential difference until drops of...

thank you for your help.

Homework Statement A 0.011 kg cube of ice at 0.0 degrees Celsius is added to 0.450 kg of soup at 80.0 degrees Celsius. Assuming that the soup has the same specific heat capacity as water, find the final temperature of the soup after the ice has melted. (Hint: There is a temperature change...