Recent content by brad sue

hi, the labels are components of the system with their logical connections. how do you know , i need to have 10 paths?

Hi, please I need help with finding the minimal paths and cuts of the attached figure. Here for the cuts I found: {1,6}, {7,3}, {6,4,2}, {2,5,7} for the paths I get: {6,7},{1,2,3},{1,2,5,7},{1,4,7} Do i miss some paths or cut please? Also i cannot find the an expression for the...

Hard sphere is the "normal" cross section we have in classical physics namely pi*radius^2. we are in quantum system and usually thr cross section is function of the particle speeds. I am trying to understand this 3 body cross section with the quantum energy bound states but all those curves...

Hi everybody, I was reading an article and I have this affirmation i don't know if correct: the hard sphere collision cross section for 3 bodies always equal to zero. Is it true? Why should it be? Thank you

I think I get the notation. The main issue is what values for example the multiplicity can take? The maximum number of valence electrons is 8 i believe. and each electron can spin up or down. do i need to enumerate all combinations electron spin! this is a lot and I am not sure this the the...

Homework Statement Give the full designation (e.g. 3P0) for all possible singlet, doublet, triplet and quartet S, P and D atomic states. The Attempt at a Solution I don't understand this question at all! Up to which values does the angular momentum (supscript) and multiplicity...

100 N/C thank i forgot all those units! to find the final speed, i use the formula (Vfinal)^2-(Vinitial)^2=2a*(0.1 e-2) when i did I found Vfinal =1.03 e6 m/s the velocity difference i think is very small , it seems not right. did i do the question corretly? thank you

Homework Statement Calculate the velocity of an electron with 3 eV energy. This electron is accelerated by a constant field of 10 V/cm (parallel to the electron velocity) for 0.1 cm. What is the new electron velocity? My other problem is the unit for the electric field . it bothers me...

Hi, Please can anyone give me some ideas of a "relatively" easy circuits involving digital and bipolar technology (meaning both technologies combined) to make a vlsi layout? It is for a project and I really did not find something interesting. Thank you

Thank you As you said the lens just allow the fringes to be seen at a focal length . For example if the distance to the screen was 2* focal length the fringes would appear blurry.

Homework Statement The Young's double slit experiment is modified, as shown below, by placing a thin parallel glass plate of thickness d and refractive index n over one of the slits. Here a is the slit width in the x direction and b is the slit separation also in the x direction. The system...

Sorry about that! So far the robot is just running according certain command : turn left , right etc.. The motor speeds are controlled via the pulse width modulation (PWM). The sensor is the QRB1134. It is a photo transistor. The MCU I used is the freescale MC9S1C32 and it has a ADC...

Hi, I would like to measure black line width (width of 0.5 inch)with a robot. I don't know how to do it. I use a QRB1134 sensor and the Analog/digital converter. please can someone guide me on the procedure for this please? C.

HI, I have his problem on open collector and I don't know how to deal with it: In the figure attached, the first transistor is driven by an output of the MCU, with the goal of turning the LEDs(several in parallel) on and off. Compute the values of R1,R2,R3 required to make the circuit work...

Thank you I will work on it!