Recent content by mayeh

Homework Statement 1. A 4MVA, 13.3kV, 60Hz, 3 phase, delta-connected alternator has an effective resistance of 5.2 ohm/phase and a combined armature reactance of 54 ohm/phase. Determine the full-load generated voltage per phase, a. At unity pf, b. at 0.8 pf lagging, and at 0.866 leading pf. 2...

c++ strings help! Homework Statement Create a C++ program that would ask the user for a username and password. Password field should be masked. If the user exceeded three errors, a string will be seen on the screen which says “ERROR” and exits the program. username: ayen_lee...

sorry, i don't get it... could you please explain further.

a bacterial population B is known to have a rate of growth proportional to B itself. if between noon and 2 PM the population triples, at what time, no controls exerted should B become 100 times what it was at noon? what does it mean by between noon and 2pm? does it mean that it takes 2hrs...

yeah.. thank you.. i got the right answer.. same as the book..

Neglecting friction, determine the tension in cable ABD and the reaction at support C. http://www.imagevimage.com/images/Picture1.jpg help.. i don't have any idea to solve for the tension so that i could solve for the component force c

please check if the answer is correct. this is the question: http://www.imagevimage.com/images/1_7.JPG http://www.imagevimage.com/images/CCI11042007_00001.jpg

a.. ok.. wow, never noticed that.. thanks a lot!

thanks.. but uhm.. sorry I do not understand it well.. could you please explain further how can i simplify so that i could come out to the same answer as the book.. please.

Homework Statement [SIZE="5"](3x-2y+1)dx+(3x-2y+3)dy=0 this a piece of my solution: (pls correct if I'm wrong) I thought of solving it using miscellaneous substitution using (3x-2y+1) as u... du= 3dx- 2dy ,dx=(du+2dy)/3 so, >u[(du+2dy)/3) + udy +2dy =0 >u(du +2dy) + 3udy + 6dy...

thanks! i'll try that..

Homework Statement two blocks CONNECTED by a cord over a frictionless planes, (for illus. see the fig. below) (a) which way will the system move when the blocks are released from rest? (b)what is the acceleration of the blocks (c)what is the tension in the cords? <a...

i tried to get its acceleration and i got a 3m/s^2, but after that i don't know what to do, I'm not even sure if i got it right.

pls. help --> acceleration Homework Statement a ball starts from rest and rolls down a hill with a uniform acceleration traveling 150m during the second 5.0s of its motion. How far did it roll during the first 5.0s of its motion:confused: pls. help Homework Equations The Attempt at...