Building Definition and 891 Threads

Hey, my physics teacher handed us this assigment and said have fun. He didn't explain what to do or go over how bridges work. So I was wondering if anyone here has done something similar to this. I believe I can work out the design, but what kind of pasta and glue would be most appropiate to get...

I have a problem where one reading is 743mm at the top of the building and 760mm at the bottom of building. In order to find the height of the building I tried getting the difference of the two readings and multiply by the density of the mercury that it contains. I should come up with 179 m...

Hey i was wondering if anyone had any sites on how to build a Spark Gap Radio Transmitter, i need to do this for history to show how marconi invented the radio. Thanks- Andrew

hey guys, I have been looking to make a outdoor led washlight for a long time now. I am not very experienced with electronic circuts but I can understand the basics. I am planning to have 30 leds, 10 each of red green blue. I want to control the three different colors with a potentiometer...

Hi everyone. I would like to build my own foundry, if possible to melt iron. From all the research that I have done, I can see that almost everyone opts to melt aluminum, even when it comes to building a metal lathe. The reason why I would like to melt iron/steel is that I am also wanting to...

A 50 story building is being planned. It is to be 200 m high with a base 56 m by 70 m. Its total mass will be about 1.8 X10^7 kg and its weight therefore about 1.8 108 N. Suppose a 200 km/h wind exerts a force of 1000 N/m2 over the 70 m wide face (Fig. 12-86). Calculate the torque about the...

Few weeks ago there was that huge fire in a high rise tower in Caracas/Venezuela,does that building collapsed?

Alright, so I have finally decided to buy a new computer. I am going to build it myself. But I have a question. I currently have a dell dimesion 4100. All that I am going to buy new is a mother board with a p4 processor, ram, a dvd burner, and hard drive. Can I just take the mother board...

There are 1,050,000 marbles. If the marbles are used to stack into a 3-sided pyramid, and every level of the pyramid is 2 cm high. How many centimeters tall can the pyramid get?

more kinetics :( sigh here's another one i thought i knew how to do but i ended up with the wrong answer. A brick is dropped from the roof of a building. Twenty meters below the point of release is the top of a window. How long will it take the brick to pass in front of the window which is...

A rock is shot vertically up froma building and starts falling back to Earth after 1.60 seconds. After 6.00 seconds, it hits the ground. Constant acelleration of 9.81 m / s^2. a. What is initial velocity? b. What is max height above building? c. How tall is the building? I got the...

Is there any reason not to build nuclear power plants underground? All of the ones I know of (http://pravda.ru/main/2002/02/05/36613.html) are all above ground - if there’s a problem like meltdown, it gets scattered all around. My thinking is that if we build these things underground this...

I want to build a tesla coil for my school's science fair. Is there some way you can make the Tesla coil safe and not extremely dangerous and deadly? I don’t want to kill myself :eek: ! Does anyone have any tips or advise? ~Thanks

I know it may be ambitious, but my astronomy club is considering building a small observatory. nothing to special, but something good enough that can be built is a shortish space of time (hopefully a few months in the spring and summer) but can be enlarged or enhanced in the future provided...

smalest cell ? what is the smallest cell in the human's body ? regards abc

Are there any relations between these two trees ?? Where can i find source code to build a splay tree ? I have heard that if we applied the ideas of SINGLE ROTATION[/color] and DOUBLE ROTATION[/color] which are used in AVL tree, we can then build SPLAY tree easier, is this correct ? Thanks a...

http://www.subterrane.com/howto/howtohbomb.shtml It's a bit old this one but still, it's funny! Also, can this "recipe" theoretically work if I were to try it out (not that I am!). ALso, anyone else got any interesting sites with stuff like this??

OK as you can tell I am 12 but fairly smart (wink,wink) This summer me and my friends plan to have a huge neighborhood water gun fight and I plan on building a waterballoon launching Trebuchet about 3 or 4 feet heigh. I need some help with the materials I should use and the weight of the well...

I’ve been working on some electroGrav theories and am now wanting to start building models to try and test these theories. I’ve a 8ft satellite dish that I was thinking on using as a mold, but have no good ideas on how to go about this. As like a “UFO”, I need to create a top and bottom...

I am looking into building a hovercraft, but i have virtually no idea where to begin. I could use a bit of help. Perhaps something that uses magnets... Thanks for any help.

Hello, I am in the process of building a set of speakers (not my first pair), however I have run into a little bit of an issue. The tweeter I am using has a built in crossover, which cuts out the lower-end frequencies. If I am to wire both the tweeter and the woofer in series, the woofer...

my goal is to make a mod 60 counter using mod10 and mod6. Both counters have a clk input. Mod10 will count and will produce a cout which will carry to mod6. At this moment, mod10 will be 0 while mod6 is 1 which is 10. This will continue to 59. I need serious help on how to connect them...

I'm wanting to design and build my own street legal car. I've pretty much got the design that I want I just need to know how to design and build a simple (if possible) chassis and what kind of medal to use for the outer body.

We are building a contraption out of 50 drinking straws (non bendable) and one meter of tape that will stop one large egg from breaking on impact. It will be dropped from a third story. We would sincerely appreciate some design input, as we have already lost 7 eggs to my front walkway.

I have been thinking about building an interferometer (similar to the Albert-Michelson experiment)for my physics project to prove that the speed of light in vacuum is always constant. Are there any references that I can relate to building an interferometer?

What do you do to find the x and y coordinates of a ball that is thrown from a building onto a slope? *Initial velocity is given along with the angle *The height of the building is given *And the angle of the sloped ground is given

I have near to no knowledge of statistics, and I want to build a statistical model that can help me calculate %chance of an event happening in situations of type: every try has 25% success rate after 6 tries, what are the probabilities of having succeeded at least 5times? After 12tries...

Can anyone give me a link to or information about how to build a PRACTICAL particle accelerator? Like one that would fit inside a basement or garage? Please, no handhelds that can't do much, and no mile-long underground accelerators that require their own nuclear power plant. I am interested...

i need to make a spring launcher that launches a small ball using a spring (one that stretches)... so how do i attach the spring to the piece of wood so when i stretch it all of the energy is converted to the ball..

My schools Solar/Elect car team is currently in the process of building a new car. [PLAIN]www.solartiger.org[/URL] .we are faced with 3 choices, 1st is to build a car from ground up, 2nd is to build a car from an existing frame, and the 3rd is to convert a car. I'm supposed to write a propsal...

ok: so i got this project for physics, and we have permission to ask ANNYYYOONNE we want for ideas/help (that is..except our teacher)...and well, please help! we have to build a car that can travel a distance of 8-12 meters. it cannot be propelled by human, animal, or commerical propulsion. it...

I am trying to build the back wheels for a Lou-vee-Air Car. I am having a problem -> the wheels wobble too much. I am using paper clips with 90 degree double-L bends. Can anybody pinpoint some suggestions? I am using tape to hold the clips onto the wheel. I am limited to the materials show...

I need to write a short paper on the physics of dropping an egg from a 5 story building. Below are questions I pondered... What are the forces acting on the egg as it falls? How can you control the forces that cause the egg to break? What are the common characteristics of the materials...

Is it possible for us to make a functional model of the human brain? I'm not interested in the phylosophical implications, but more in the resources, techonolgies we can use (that's why I posted here... )

I want to build a low-amplitude microwave generator. Nothing as strong as in real microwave ovens. I believe I have most of the theoretical knowledge needed, and I am willing to spend up to 200$ on materials. Any idea where to start? Anyone tried this himself once? Thanks :)

Spoonerism (see BT #28) Vibrate a building in Pisa

"As you read this, know that massive forces tens of miles beneath your feet are building towards what could be another catastrophic series of volcanic eruptions if present trends in the monitoring data remain.” http://www.yowusa.com/Archive/Jul2003/volcanism2/volcanism2.htm

I was wondering if anyone knew of any websites which deal with the specfic gravitational and nuclear effects at each age of a stars life. I am going to "try" and create a sun simulator! as a start of OpenGL programming physical simulators, and thought this would be a good start point :) thanks!

I am building a custom chopper, hardtail frame. I am learning as I go and I had a video to help me but my vcr ate it. Does anybody know about transmission mounting or anything about bikes?

Ok, awfully long subject, but its an attention getter. Anyhow, my friends and I have been wanting to build small, 1 - 2 seater transport vehicles. I've got some basics on my ideas, hoping to get as light of a vehicle as possible, while meeting modern safety and emmission standards. So for...

I am building a new computer and i was looking at video cards. They have tv out on them and i am wondering if anyone has ever used one, and how it looked on a standard tv.