# Search results for query: *

1. ### Is there any normal stress on torsional member?

Homework Statement is there any normal stress on torsional member? Homework Equations The Attempt at a Solution My professor showed me a circular rod made up of rubber and she made a rectangular hole on the side of it and asked whether there is any normal stress on the torsional...
2. ### Solving Node Voltage: Va = Vb x R1/(R1+R0)

Homework Statement Find the node voltage Homework Equations Va = Vb x R1/(R1+R0) The Attempt at a Solution I didnt have the original picture of the question but this example is exactly same as the question that i had to solve. but I don't understand this thing from the first...
3. ### Kinematics of rigid bodies 2

Homework Statement At the instant shown, bar AB has a constant angular velocity of 25 rad/s counterclockwise. Dtermine at that instant a) the angular velocity of the rectangular plate FBDH, b) the velocity of point F Homework Equations Va = Vb + Wba x Ra/b The Attempt at a Solution...
4. ### Kinematics of rigid body

is Vc = 0.3m/s and acceleration at point B = 0?
5. ### Kinematics of rigid body

Homework Statement Three belts move over two pulleys without slipping in the speed reduction system. Point A on the input belt moves to the right with a constant spped of 0.6m/s. Determin the velocity of point C on the output belt, and the acceleration of point B on the output pulley...
6. ### Reactions from supports

Oh so the force is actually acting downwards on the right support? I thought that because it is the force that is supporting the bar, it must acting upwards. Thanks
7. ### Reactions from supports

Homework Statement Find the reactions exerted on the members by the supports. Homework Equations Sigma Fx = Net force acting on x-axis = 0 Sigma Fy = Net force acting on y-axis = 0 Sigma M = Net Moments = 0 The Attempt at a Solution 10N/m -> changes to 4N at centre acting...
8. ### Solving Collar A, B, and C's Motion

Thanks a lot!
9. ### Finding Moment About Any Point: Fixed Moment Value?

The formula to find the moment about anypoint is Fxr right? but if the moment is given, for example 50Nm then the moment is fixed right? even if we change the regarding point on the system, the given moment is 50Nm regardless what point we are regarding to. Am I right?
10. ### Solving Collar A, B, and C's Motion

Homework Statement Collar A starts from rest at t=0 and moves upward with a constant accleration of 9cms^-2. Knowing that collar B moves downward with a constant velocity of 45.7cms^-1, determine the time at which the velocity of block c is zero and the corresponding position of block c...
11. ### Find the relationship between them

Homework Statement The five ropes in the picture can withstand 1500n each, how heavy can w be without breaking any? Homework Equations The Attempt at a Solution First naming the tensions on the rope t1,t2,t3,t4,t5 and find the relationship between them, like t1 = 2t2 but i...

Thankyou :)
13. ### Find the moment caused by all the forces

Homework Statement two couples are acting on the frame. If the resultant couple is to be zero, find the distance d Homework Equations The Attempt at a Solution First find the point, Let's say A on the picture, and find the moment caused by all the forces 500cos30 x 0.9 acting...
14. ### Solving for Tension & Angles in Ball Mass Problem: Help Needed!

http://ruliweb6.nate.com:8080/ruliboard/gup/img_link7/436/435945_1.jpg [Broken] Ball A B Mass m 2m Length of tread is 2R where R is the radious of the Circle. I have to find the tension on the tread and angles I could have found the angles by...
15. ### Composition of functions (in set)

Ohh i got it. g(1) is 3 and as f has point (3,3) the answer is 3 thanks!
16. ### Composition of functions (in set)

g(1) would be 3 as g has point (1,3)
17. ### Composition of functions (in set)

Homework Statement A = {0, 1, 2, 3} f and g are functions mapping A to A where f = {(0,1),(1,2),(2,0),(3,3)} and g = {(0,2),(1,3),(2,0),(3,1)} find (f o g)(1) Homework Equations The Attempt at a Solution The answer is 3 but i can not get it.. the (1) on the right side...
18. ### Photoelectric effect

Homework Statement 1. If frequency is constant and intencity of light is doubled what happen to the current? 2. If frequency is constant and intencity of light is doubled what happen to the voltage? 3. If intencity is constnat and frequency of light is doubled what happen to the current...
19. ### Combining Stable Nuclides to Form Unstable Nuclides

Wow I didnt expect such a detailed feedback thank you so much!
20. ### Combining Stable Nuclides to Form Unstable Nuclides

Hello Is it possible to combine two more stable nuclides to form unstable nuclides? like for example combine Xe and Sr and form U In fission it is like U + n -> Xe + Sr + n can we reverse this process? if one doesn't care about the cost effectiveness Thankyou
21. ### Light: Transverse Waves or Photons?

So it will be easy for me to think that the light has the property of transverse wave but not all of them right? Thankyou guys!
22. ### Light: Transverse Waves or Photons?

I heard that transverse wave can not travel trough gas and liquid then how can light travel through all the way to earth? Is it because the light is the collection of small energy particles called photon and not just behave as the normal waves?
23. ### Line of maxima and minima

Homework Statement Please look at the attached picture In that I had to draw the line of maxima and minima Homework Equations line of maxima has greatest gradient line of minima has smallest gradient The Attempt at a Solution which line should be the maxima? the line with the...
24. ### Proving De Morgan's Laws

what is this \neg stand for?
25. ### Proving De Morgan's Laws

Homework Statement Prove De Morgan's Laws (only (A U B)' = A' n B' part) Homework Equations (A U B)' = A' n B' The Attempt at a Solution I used this x does not belong to (A U B) x belongs to A' and B' x belongs to A' n B' now opposite x belongs to A' n B' x belogns to...
26. ### Integration of arcsinx

Thanks a lot!
27. ### Integration of arcsinx

Homework Statement Intergrate arcsinx Homework Equations The Attempt at a Solution I couldn't even touch this question. I saw the answer but still can not understand how to do this.
28. ### Empty relation and equivalence classes

I understood why empty relation is symmetric, transitive but not reflexive by default. Empty relation is relation which can not be satisfied by the elements within the sets right? So there is no ordered pair in it. R = {} nothing.
29. ### Empty relation and equivalence classes

Ohhhhhh I got it know! so R={()} things are the element of AxA and the subsets of A{1, 2, 3, 4} are {1, 3} and {2, 4} as repeated elemtns are not allowed. But in the explanation of empty set i can not understand this line and any implication of the form False => True is true Sorry my...
30. ### Empty relation and equivalence classes

These two terms would be the simplest terms in the set theory as they are on the first chapter in my textbook. But why can't i understand it? In my textbook it says A relation R in a set is a set of ordered pairs, so any subset of a set of ordered pairs will be a relation. This includes the...
31. ### Symmetric relations

Right..ahh why couldn't i think about such things before register the replies.. Thankyou!
32. ### Symmetric relations

an one more question {(x,y) l x^2 + y^2 = 9, x belongs to Z} I have to find the domain and range here and as x belongs to Z [interger] I thought the domain is all the integers. and if x = 5 then y^2 = -16 which gives answer y = 4i so range is all the complex numbers. But the answer is...
33. ### Symmetric relations

Ohhhhh right why couldn't i think about that. Anne is name of girl indeed.. Thankyou!
34. ### Symmetric relations

Homework Statement Is this relation symmetric? The relation in a set of people, "is brother of" Homework Equations aRb , bRa The Attempt at a Solution The answer is not symmetric. They gave example says that paul may be the bother of Anne but Anne is not the brother of paul...
35. ### Lines and planes in space

oh, so if there isn't any restriction then i can choose any value of x and y on the plane? Thankyou :)
36. ### Lines and planes in space

Homework Statement 1. Find the distance betwwen the parallel palnes: a) x + y + 2z = 4 and 2x + 2y + 4z +11 = 0 b) ax + by + cz + d1 = 0 and ax + by + cz + d2 = 0 2.Find the equations of the two planes which are parallel to 2x - y + 2z = 5 and 2 unit from it Homework Equations...
37. ### Complex number question

Wow i also drew some similar graph but couldn't understand what to do with that but by drawing the line at the middle everything become clear. Thankyou so much!
38. ### Complex number question

That I know; but this thing is little different from the normal quetions where the number is multiplied to z such as -z, 2z etc which i can use that formula but here i think i should know some angles and shape of graph I saw the answer and it was moduls = 2 sin (@/2) argument = (@/2) + (pi/2)
39. ### Complex number question

Homework Statement If z = cis @ where @ is acute, determine the modulus and argument of z-1 Homework Equations The Attempt at a Solution As the moudlus of z is 1 z lies on the unit circle. And I can not think of anything more. I drew a graph to see how z-1 seems like in graph...
40. ### Integration question.

14378 is the answer i got from your method. And this question was under the heading of Integration so i think i should use integration method to solve it.
41. ### Integration question.

Homework Statement Jon needs to bulk-up for next AFL season. His energy needs t days after starting his weight gain program are given by E(t) = 350(80 + 0.15t)^0.8 - 120(80 + 0.15t) calcories/day. Find Jon's total energy needs over the first week of the program. Homework Equations...
42. ### Seperation of the induced charge

ooohhhh! I got it know Thanks a lot!
43. ### Seperation of the induced charge

Homework Statement Please look into the attached file. In that you can see a block conductor is moving within the magnetic field which is acting isto the page. What will be the separation of the induced charge? will it be 1 or 2? Homework Equations The Attempt at a Solution By...
44. ### Motion in the field (electric, magnetic) questions

The diagram for question 1 is like this l <- shows the direction of motion of conducting block x <- shows that the direction of magnetic field is into the page ...... l ...... l ...... l xxxxxxxxxxxxx l xxxxxxxxxxxxxxxxx xxxxxxx conducting xxxxxxxxxxxxx xxxxxxx block...
45. ### Motion in the field (electric, magnetic) questions

anyone question 1?
46. ### Motion in the field (electric, magnetic) questions

Oh i think i got it. Thanks alot
47. ### Motion in the field (electric, magnetic) questions

--l-----l-- --l-----l-- N-l-S-N-l-S --l-----l-- --l-----l-- (Please ignore the dotted horizontal line it had to be there to draw it properly) Doenst it be something like this when the current on both wire is flowing at the same direction? I can understand that if i use the right hand...
48. ### Motion in the field (electric, magnetic) questions

Homework Statement Why can't i upload the image file here? anyway i'll try to explain it in words 1. One block of conductor is positioned in the magnetic field (into page) and the block is moving up with certain velocity. What will be the separation of the induced charges? 2. Two...
49. ### Ratio kinetic energy of alpha particle / kinetic energy of proton

Thanks a lot! So i didnt have to know the exact charges but the ratio
50. ### Ratio kinetic energy of alpha particle / kinetic energy of proton

Homework Statement A photon and alpha particle are accelerated from rest through the same potential difference. After acceleration what is the ratio kinetic energy of alpha particle / kinetic energy of proton? Homework Equations I guess I have to use eV = 1/2mv^2 The Attempt at a...