# Search results

1. ### Weird traffic controller

Cars and pedastrians are controlled by switch and we dont use latches. We create state machine and use vhdl to implement program in CPLD circuit. Hope that answer your questions.
2. ### Weird traffic controller

Hi, I got this instruction given: > For each of the following three scenarios, initially assume that the East-West traffic has had a green traffic light for a long time. 1) If a North-South car is detected then the traffic lights will cycle to green in that direction. The walk light will...
3. ### First order RC Circuit Table problem

I understand but thats what it said... complete table 1.
4. ### First order RC Circuit Table problem

I understand but thats what it said... complete table 1.
5. ### First order RC Circuit Table problem

Homework Statement Hi I got this problem and have to fill out this table. Homework Equations node analysis time constant = RC ic(t)= C dVc(t)/dt The Attempt at a Solution I got few answers which i worked it out. i (0-) = 0 Vc(0-) = 1.84 Vr(0-) = i (0-) *...
6. ### Thermodynamics !

Homework Statement A stove burner supplies heat to a pan at the rate of 1500 W. How long will it take to boil away 1.1 kg of water, once the water reaches its boiling point? Homework Equations q = mct The Attempt at a Solution heat transfer = 1500 W, m = 1.1 KG Tf = 100 [
7. ### Find the tension in the horizontal cable that supports the boom

Homework Statement A crane in a marble quarry is mounted on the rock walls of the quarry and is supporting a 2000 kg slab of marble as shown in the figure. The center of mass of the 900 kg boom is located one-third of the way from the pivot end of its 15-m length, as shown. Given...
8. ### Torque Problem Static equilibrium

ohh crapp i have to use distance from pivot which is 3 right ??
9. ### Torque Problem Static equilibrium

Homework Statement Homework Equations How to do this question ?? The Attempt at a Solution I know sum of torque and force = 0 at fapplied i got torque = 25sin(45) * 3.8m = 67.18N .. But dont know what to do next !!!
10. ### Other Force problem

Cause... thats where i was gettin tricked.
11. ### Other Force problem

Ok how do you know thats total vector ?
12. ### Other Force problem

Other Force problem !!! Homework Statement Two forces act on a 3.1 kg mass, which undergoes acceleration a = 0.88 i - 0.28 j m/s2. If one of the forces is F1 = - 1.5 i - 3.0 j N, what is the other force? Homework Equations I don't know how to visualize this !!!! The Attempt at a...
13. ### K-Map Symbol.

Hi, below image. My teacher use symbol in K-MAP. But not sure how it uses. Myattempt : i got 0 0 0 0 0 0 1 1 0 0 1 1 0 1 1 0 --> Using his technique. Can somebody help me out ?
14. ### Why period is half ? Spring problem

Yes BASIC But how ? And I know when max displacement the T is gonna be 1.
15. ### Why period is half ? Spring problem

Homework Statement A mass m slides along a frictionless horizontal surface at speed v initial. It strikes a spring of constant k attached to a rigid wall. After a completely elastic encounter with the spring, the mass heads back in the direction it came from. (a)In terms of k, m, and v...
16. ### How to Take the sum of moments

Yes, the centre of mass at mid weight and pivot at p.
17. ### How to Take the sum of moments

How to Take the sum of moments !!! Homework Statement Hi i am doing static equilibrium exercises in textbook. Homework Equations But I dont know how to find sum of moments at P when its come to angle. This is a drawing The Attempt at a Solution I have No idea !!! I was...
18. ### Aluminium Block immersed in water beaker

Homework Statement physical reasons for the relationship between weight change(100CC beaker with water and when you dip aluminum block in water ) and apparent loss in weight of the aluminium (Aluminium block weight using spring balance and when that block immersed in water) Homework...
19. ### Surface Area frictional force

Homework Statement does surface area to affect the values of coefficient µk? Homework Equations frictional force =µk * normal force The Attempt at a Solution I know that if mass is larger then the frictional force is higher( f= ma) but how about the surface area? does it affect...
20. ### Find i(t)

Homework Statement [Broken] Homework Equations impedence diagram, XL = ωL The Attempt at a Solution Ok i got XL = 47 ohm Then my phase angle is 88.8 degree. Then to find i(t) i have to add that angle to the function right?
21. ### How? Which Trig Identityis that?

Awaks.. IT is solution of the Electrical Engineer : priniciples and application Hambley book. And they made it wrong. I asked the question though i was wrong.
22. ### How? Which Trig Identityis that?

but there is no sin..
23. ### How? Which Trig Identityis that?

How?? Which Trig Identityis that? Homework Statement [Broken] Homework Equations The Attempt at a Solution sin^2 = 1- cos^2 ??
24. ### Ok how do they got this ?

Homework Statement I am following book and they got this equation but i dont know how they got it ?? [Broken] Homework Equations The Attempt at a Solution I know they use kirchoff's voltage law but at which point they are choosing and how they are going and acquire this...
25. ### Impedance Problem

isnt it Xc = 1/ angular freq.* C ??
26. ### Impedance Problem

Homework Statement A circuit consists of a 50nF capacitor in series with a 47kΩ resistor. An AC voltage of 120Vrms at 350Hz is applied to the circuit. (a) Determine the current flowing through the circuit. (b) Sketch the impedance diagram for the circuit at this frequency. Homework...
27. ### Confusion RLC circuit

Nice !!! thanks for all the help !!
28. ### Confusion RLC circuit

gotchya for 1 ms liner becomes flat and than flat becomes no gradient follow on right?
29. ### Confusion RLC circuit

Yeah i solve the question but i forget how i did it and why is like that !!??? :(:cry:
30. ### Incident question - historical event with lack of ethics

i am thinking of west gate bridge or chernobyl !!!!