Recent content by kings13

Homework Statement A series RLC circuit has an electromotive force given by E=200e^(-100t) V, a resistor of 80 ohms, an inductor of 0.2 H, and capacitor of 5x10^-6 F. If the initial current and charge on the capacitor are zero, find the current at any time t>0. Homework Equations ...

A series RLC circuit has an electromotive force given by E=200e^(-100t) V, a resistor of 80 ohms, an inductor of 0.2 H, and capacitor of 5x10^-6 F. If the initial current and charge on the capacitor are zero, find the current at any time t>0. How on Earth do i start this?!

Homework Statement A .140 kg baseball traveling 35 m/s strikes the catchers mitt, which, in bringing the ball to rest, recoils backward 11 cm. what was the average force applied by the ball on the glove? Homework Equations The Attempt at a Solution ughh i have really no idea. i...

the online thing wanted decimals but yea i shud leave it as that for the test. before someone calls me dumb for not using inverse trig i solved it before reading the last help

inverse cosine i got it right thanks for the help

well the integral is 4.24. the 1/b-a is .63662 4.24x.63662=2.7 2.7=3cos(x)? what? how in the world do you solve that

not thinking straight. sorry I am doing an essay at the same time but that's really no excuse 3sin(pi/4)-3sin(pi/4)= 2.12132+2.12132 now what?

3cos(pi/4)-3cos(-pi/4)=2.12-2.12. or is it plus? if it is plus then what next? multiply by 1/b-a?

a is -pi/4 b is pi/4 f is 3cosx integral is 0. cause odd function right?

the average area under the graph? 1/b-a times f(c) right? but how to put numbers into that

Homework Statement Find the value(s) of c guaranteed by the Mean Value Theorem for Integrals for the function over the given interval. Homework Equations f(x)=3cos(x), [-pi/4, pi/4] The Attempt at a Solution well i do f(b)-f(a)/b-a and get zero but that's not the answer...

what about from [0,7] with the integral being 8f(x)dx i did 1/2(7)(1+5)(8) which was wrong. what did i do wrong?

so from [0,1] it is just 1/2bh? wouldn't that be just 1/2 x -4?

Homework Statement http://www.webassign.net/larson/4_03-48.gif a) integral -4f(x) from [0,1] using that graph Homework Equations The Attempt at a Solution i really have no idea what to do. i understand integrals but not with agraph? what is it asking me?

http://www4a.wolframalpha.com/Calculate/MSP/MSP93419cd13d43b6e511700000d6f885345b6b5d7?MSPStoreType=image/gif&s=44&w=296&h=42 it says that is the answer. but that's not my problem, what is the coordinates to the answer? I am not sure what I am looking for