Designing Definition and 577 Threads

Okay, here's the deal: I am doing an egg drop tomorrow in my physics class. We are allowed only 25 straws, and scotch tape to do it. What would be the most effective structure to use for this? By the way, my teacher didn't tell us of any limit on the amount of tape we were allowed to use.

Hi all, new guy from CT. We were just assigned a project in physics to build and design a mouse trap car powered solely by the potential energy of a standars mouse trap. The main focus is distance, and so that is what I am aiming for. I have my basic design laid out, as I will attach two...

i am looking for a tool where i can designe degenerate PCR primers. by the way i have read about degenerate PCR, but find it hard to understand, so please explain these for me; in standard PCR mixture we have a forward and reverse primer for our target, but how many primers do i need in a...

I am designing a lab to prove that F=ma. However i am only using a spring scale, 1 kg mass, string. I have come up with a procedure where you would attach the mass to the scale and accelerate the unit upward, recording the time it takes the unit to accelerate from 0-1m and the force shown in the...

Two physics students are having a debate about the best way to define a force scale using rubber bands. Each one is trying to convince you to do it their way. They have the following apparatus to use in tests: A bunch of identical small rubber bands 10N spring scale meter stick Joe...

Anyone know a simple and non-complicated experiment that I can do to prove this law? Thanks in advance

Hi I'm designing a torque wrench. But i need some help. I have a drawing torque3.jpg the gear connects to the socket. If I'm putting 300ft/lb torque on a nut using the socket connected to the gear. and the gear connection to the handl thru the gear locker, and the gear locker can push...

Hi I'm designing a torque wrench. But i need some help. I have a drawing torque3.jpg the gear connects to the socket. If I'm putting 300ft/lb torque on a nut using the socket connected to the gear. and the gear connection to the handl thru the gear locker, and the gear locker can push...

Right now I'm trying to design a tracking chip that is small and convenient. I want it to be able to fit in a pocket. I need help building it and I've looked all over the web for ideas. This is an extra credit project for physics and i would appreciate it if anyone had any idea or plans. Thanks

I've been reading, trying to learn electronics. Everything I've read so far seems to be either components or finished circuits. I want to read about the 'inbetween' process. The 'why' for each step of the design. Why use this battery. Why use that size wire. Why put a resistor here. Why use a...

I'd like to design and construct a circuit. Where do i start?

am to design an experiment showing how magnetic field strength of a magnet varies with its temperature. i know i can use a hall probe to measure the field strength - but how do i vary the temperature, and ensure that this is uniform throughout the magnet?

i am to design an experiment showing how magnetic field strength of a magnet varies with its temperature. i know i can use a hall probe to measure the field strength - but how do i vary the temperature, and ensure that this is uniform throughout the magnet?

I'm currently doing Electronics at the University of Eindhoven (Netherlands) and we need to make an AM demodulator (input signal lays between 875 and 915 kHz). We have made some sort of circuit (two to be exactly), but we are questioning the accuracy of this demodulator. The main problem is we...

[FONT=Century Gothic]Okay, going completely crazy here. I'm in accelerated physics and we just got assigned the gravity car. The way its supposed to work is like this-- a weight is supposed to be dropped from a certain height and its supposed to propel the car forward (GPE converted into KE and...

hi, can someone give me hints on how to design a counter that counts 0->5->2->7->4->1->6->3->0 using T-flip flop and some gates? I've been looking at this problem but i don't know where to start... thanks vinh

Dont know if this is the right forum for this question, let me know if its not! Im designing a car and i need a 50 litre fuel tank. Can anyone tell me what the dimensions of the fuel tank would need to be?

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.

Help. I need help in designing a "safe" that gives me heat and fire protection. I will be using an skins of steel and need help in selecting the core materials. I am trying to protect electronic media so the heat gain inside has to be close to minimal. I am also trying to keep overall wall...

Ok for this project I'm supposed to build a vehicle that is human powered (the easy part). the hard part is, I have to make a claw that will be able to grab things like erasers, balls, and a bucket with a 2.2 lb weight in it. It will also have to be able to grab a ball from a stool and place it...

*******mousetrap Cars****** I NEED HELP I am building a mousetrap car, and I have to write a 5 page paper about it. Can someone please help me figure out what to include in the essay!?? I know I am supposed to talk about kinetic and potential energy, but what else? All i have right now is a...

Yesterday I found out I actually have a domain on my name So I started playing with it a little.. I will need some help though, since I don't know HTML or anything about this stuff.. http://home.student.uva.nl/monique.vandervoet/" Not entirely too bad, huh? so yesterday the picture...

another question. consider the possibility of designing a fission reactor that will operate for decades or even centuries without refueling. limit the investigation to thermal reactors with reaction rates = 2200 m/s cross section. Consider 3 fissile/fertile combinations: 1) Fissile= U-233...

Now I am looking for some software to test primers with. I always used to eye-ball a sequence, and based on that pick some good looking sequences, put it into the Mac program: Amplify. This program then visualizes how specific and efficient the priming is on the target sequence by virtual pcr...

I have seen designs of electron sources that use a heated filament to create a cloud of electrons then apply a voltage across them to accelerate them for whatever purpose. Could you replace the filament with a needle spraying the electrons?

A group of us three are designing a "Herculean Chair" for Physics class. The chair must be made entirely out of cardboard, and the chair should be able to support 250 pounds. (Tape, staples, w/e can be used.) We are looking for some ideas on how to go about doing this, any type of cardboard...

Just the other day, i was talking with my friend about Designer Babies, and he was like going, "It's disgusting! We are going against nature!" Stuff like that. Aren't babies/children/adults being shaped psychologically? When young, if we did something "wrong", like not doing our homework...