Recent content by the_d

Homework Statement I am attempting to perform a z-transformation on the terms 1/(z-3) and 1/(z-5) but I cannot find a sequence which fits this form in any of my tables. Is there a transform for these terms or do you just leave them as they are? Homework Equations The Attempt at a...

Homework Statement A population has an average of 12 defects per 100 feet of wire sampled and inspected. What is the probability of finding 20 or fewer defects in a sample? Homework Equations I think I am supposed to use the binomial distribution b(x;n,p) The Attempt at a...

can u explain why you alternated the values in i and j and in what sequence you did it in please?

can someone tell me why this program is equal to 9? I have been sitting for 2 hours trying to figure out how the program gets and when doing it by hand I get something different. Here is the program: #include <stdio.h> int main() { int i, j; int a=0; for (i=0;i<3;i++)...

Homework Statement Gears A and B are connected by arm AB. The angular velocity at A is 60 rev. per minuter (clockwise), find the angular velocity at B if a) wAB = 40 rpm (counterclockwise) b) wAB = 40 rpm (clockwise) Homework Equations w=dTheta / dt w = v/r The Attempt at a...

my question is that i have two resistors that are combined to form an equivalent resistance of 1000 ohms. Now there are two common resistors rated at 500 plus/minus 50 ohms and two others rated at 2000 ohms plus/minus 5%. I need to know what combo (series or parallel) would provide the smaller...

How do i get the acceleration at the midpoint of the curve?

when i say 60 degrees i mean from the center of the half circle

:smile: I have a 5 kg block goin down a frictionless curve of radius 5 meters. I need to know the tangential velocity at 60 degrees from the center of the curve and its acceleration at the midpoint of the curve. i have drawn a FBD of the block, where do i go from there?

good explanation, i think i got it now thanks 4 help

zero.....

its in the opposite direction

do i use T1 + U = T2?

ok ill see what i can do, thanx

:smile: How do i find the velocity of a block of mass 100 lb being dropped a distance 5 ft onto a spring whose stifness is 100 lbs/ft after the spring has deformed 4 in? im sure it has somthing to do with work of a spring force but i don't know exactly how. any ideas?