John

So I was sitting on the bus and this beautiful girl two seats in front of me but on the opposite side kept on kind of staring back at me. Probably just as much as I was staring at her. But she never looked at me straight in the eyes, but I could tell that she was looking at me from the corner of her eye every time she pretended to look out the window. And a few times I seen her looking at me through the reflection off the window.

But the thing is, she's a really pretty girl and me, well I don't think that I'm too much of a hottie and I've never really spoken to a girl before. But I know that I won't get anywhere if I don't give it a try. So how should I approach her? What should I say? How can I break the ice? If I ever see her again. Damn it I blew it! That was probably my only chance! But if I do see her again then what do I do?

What is the effectiveness of the reinforcement bars in compression in an under-reinforced member?

So say you have your regular beam who's cross-section is rectangular in shape, and you have your reinforced steel bars along the bottom (in tension) and along the top (in compression).

So like, what is the difference between this sort of design and a design that is just like this but without any steel along the top (in compression)? In other words, comment on the effectiveness of the compression steel in an under-reinforced member.

I've calculated to find that the design bending capacity is greater when there are no steel bars in compression as opposed to having some steel bars in compression (along the top). Does this effect anything, really?

A certain arrangement of charge generates the potential

V = 10 / sqrt(x^2 + 4y^2),

where x and y are in metres (the potential is constant in the z-direction). Derive an expression for the electric field, and draw a sketch of the field lines and equipotentials in the x-y plane. What is the magnitude and direction (given as the angle from the x-axis) of the electric field at the point (x,y,z) = (2m, 0.5m, 0m) ?

I mean it sounds believable I guess but I honestly thought that the richest rappers are only as big as billionaires followed by your average millionaires. So I was wondering, who are the richest rappers in the game and how much money do they have? Are they millionaires, billionaires or trillionaires? Give a list of the top 10 if you can.

Say you have a Van De Graaff generator which consists of a pulley belt connected via metal combs to a conducting metal dome at the top and electrical ground at the bottom. You use the pulley wheel to turn the belt. While the belt is turning, how do the hairs on your arm feel when close to the dome? Why is this?

A negatively charged oil drop is placed in a closed cube with a vertical electric field,

produced from an evenly distributed charge on the top and bottom wall, such that the

oil drop floats (stationary) in space. The electric field is then changed such that it

points horizontally only, but with a magnitude 10 times that of the original field.

a. Draw free-body diagrams, showing all forces on the drop, before and after the

electric field was changed. In each case, label the sign of the charges on the walls

producing the field.

b. What is the direction of the acceleration of the oil drop immediately after the electric

field is changed? Sketch the trajectory of the oil drop. Will it hit the sides, bottom or

top of the cube?

c. Suppose the oil drop had 109 excess electrons and that its mass was 1 nanogram.

What was the strength of the original electric field?

The two rails of a railway track are uniformly charged until they each have a linear

charge density λ.

a) Consider a point a distance y above the midpoint between the rails. Derive an

expression for the electric field at this point in terms of y, λ and d, the distance

between the rails.

b) Sketch a graph of the electric-field strength as a function of y. (Or well, please explain what it would look like).

A very thin insulating ring of radius R is charged in such a way that a positive charge Q

is uniformly distributed along one side and a negative charge -Q is uniformly distributed

along the other side (i.e. the ring consists of two oppositely charged halves).

a) Find an expression for the electric field at the centre of the ring.

b) Evaluate the field strength if R = 10 cm and Q = 60 nC.

I'm completely lost. Do we have to integrate something somehow?

Please help, any ideas would be great. : )

Q1) Write a brief description (100 words) of vergences and how they are used.

Q2) An object 1.0 cm tall is 20 cm in front of a convex mirror that has a focal length of 60 cm.

(a) Calculate the position of the image. Is the image located in front of,

behind, or at the mirror surface?

(b) Calculate the height of the image. Is it upright or inverted?

A narrow glass tube is being used to transfer a water-based solution from one place to another. At the surface of the liquid, the meniscus is hemispherical and "concave up".

There is a small particle in the tube, 6.0mm below the surface of the liquid (this is seen through the side of the tube). Looking down the tube, the particle appears 3.5mm below the surface. By considering refraction at the liquid-air interface, estimate the internal diameter of the glass tube.

Also including light/laser "Refraction" and "Total Internal Reflection"

So at the website below we have light entering a triangular prism shown in Figures 5&6, and the second example in Figures 7&8. (The prism seems to be made of glass, but for my questions lets say that they're made of silica with a refraction indice of n = 1.45)

http://www.ap.smu.ca/demos/index.php?option=com_co...

Q1)

For both situations: To maximise the light leaving the prism, someone suggests a coating of glass (n = 1.6), but they only have enough material to coat up to two

sides of the prism with thin films. For each situation, choose which side(s) of the prism, if any, you would get coated. Justify your choice.

(I was thinking to coat the sides where the light gets reflected).

Q2) (just a short one)

If you wanted to create a right-angled triangular prism that split sunlight

into its different colours, what property would it need to have?

So I've created my own instrumentals just like many others do with FL Studio. I've even written lyrics to these instrumentals too, but the thing is, I've got nowhere or nothing to record my songs with. (Well I have a computer but I'd prefer a recording booth in a studio). So I thought about showing/posting my work on sites like youtube, etc. But I don't have any recorded songs yet so thought about just the instrumentals. But what if they're actually really good and someone uses it, without permission, and makes money from it and then I can't prove that it was mine in the first place? Get it copyrighted, right?

So what is the most proper and effective way to copyright some instrumentals that I have created in something like FL Studio or Garageband? What is the best process?

List all the different pathways that rappers and/or singers have taken to become a rapper/singer.

For example, some singers are found on youtube, some on Australian and American Idol, and I think one, (Susan Boyle), from Britain's Got Talent.

Most of the rappers are American and most of them got into the game really young, like when they were still in high school. But how did they become a famous rapper? Where did it all start? Tell me some of the different ways of how famous rappers of today got into the game.

And if you could tell me, what would it take for a 19 yr old Australian boy to become a rapper or possibly singer. (Rapper/singer, i.e. T-Pain). One who doesn't have that angel singing voice but actually writes decent lyrics. Some that you rap to and some that you sing to. (The singing ones are RnB songs, similar to the RnB songs that you listen to these days). And not only do I call myself a songwriter but I love music so much that I also create my own instrumentals. (Again similar to the RnB songs that you listen to these days. And this is what I rap to since I don't fancy making a rap beat. So my instrumentals are like Hip-Hop/RnB like.) Though unlike many others, I prefer not to post my songs on youtube or myspace, etc.

So could someone kindly tell me, what are my options?

I really don't know how to prove it or which equations to use. I've never seen a problem like this one before.

The problem is:

Rhodium has an atomic radius of 0.1345 nm,(0.1345*10^-9) and a density of 12.41g/cm^3. Determine whether it has an FCC, (Face Centre Cubic) or BCC, (Body Centre Cubic) crystal structure.

How the hell can you tell just from given the radius of each atom of Rhodium and the density of Rhodium? Any ideas on which equation/formula to use?

Apart from singing along to all the songs, dancing, throwing your hands up and screaming at the top of your lungs, what else do you you do at a concert? Or what should I do at a concert that I would not regret? In particular if you were as close as possible to the stage at a T-Pain concert what would be something interesting to do apart from being the idiot by tryin' to get on stage wit' him?

How the hell do you go about this one?

I have no clue.

My math teacher went from

[(x + 1)^(x + 1)] / [x^x]

to

[(1 + (1/x))^x][x + 1]

Now I've tried different values for x and have seen that the first equation is equivalent to the last.

But could someone show me the steps in-between of going from the first to the last. Or at least tell me what my teacher has done to get from the first to the last?

Thanks,

So how old were you when you found out and how did you find out? Did you put the pieces together and found out yourself, or did your parents break the news to you? Or maybe someone else, but you didn't believe them at first until some time later you realized that your house doesn't have a chimney and that you always keep the doors and windows locked at night. So someone on the inside was workin' undercover. lol

A plane electromagnetic wave is given by Ex = 10 sin 2π (2×106x – 0.6×1015t) with all values in standard SI units. Calculate the

a. Amplitude,

b. Wavelength,

c. Frequency, and

d. Speed of propagation of this wave.

Also...

Light from a helium-neon laser (λ=633nm) illuminates two slits spaced 0.40mm apart. A viewing screen is 2.0m behind the slits. What are the distances between the two m=2 bright fringes, and between the two m=2 dark fringes?

(/=) means "not equal to"

(B^-1) means "the inverse of matrix B"

Suppose B is an invertible square matrix and λ /= 0 is an eigenvalue of B with corresponding eigenvector v. Prove that 1/λ is an eigenvalue of B^-1 with corresponding eigenvector v.

I HATE PROOF!!