Engineering - November 2007

Okay Im building a mousetrap car/ rat-trap car for my science class. Here are some instructions:
-must move on 4 wheels
-must hold one passenger (have at least one seat)
-minimum size: 25cm length x 20cm width
-maximum size: 30cm length x 25 cm width
-constructed from any household material.
-must be able to to independently cover 4.5 meters.

Please & Thanks

2007-11-09 04:35:55 · 1 answers · asked by Anonymous

I put an led light that was designed to run off the front of the computer (a keyboard light) to run off a 1.2 volt battery and it burned out within seconds, just wondered what is the voltage for these lights, seems to be very low

thankyou

2007-11-09 02:23:59 · 8 answers · asked by Anonymous

In general, for a particular electrical/electronic system, what is meant by regulation?
What is meant by regulated power supply?
clear explanation expected plz..

2007-11-09 01:36:08 · 3 answers · asked by Meera 2

It's my understanding that they used to make them with a hand-crank and dial gauge, so they did not require electricity. Do they still make them? Any one know how I could "Procure" one?

2007-11-09 00:22:56 · 1 answers · asked by Lady M 6

soon,i will major in biomedical engineering..so i would like to know wether it is part of my studies..

2007-11-08 17:46:41 · 1 answers · asked by spider 2

A street lamp weighs 190 N. It is supported by two wires that form an angle of 140° with each other. The tensions in the wires are equal.
(a) What is the tension in each wire?
____ N
(b) If the angle between the wires is reduced to 110°, what is the tension in each wire?
_____N

2007-11-08 16:51:26 · 6 answers · asked by cutie 2

If electicity costs 0.05/kwh, how much does it cost to run this appliance?

a 1200 W dishwasher for 1 hour

2007-11-08 14:39:54 · 5 answers · asked by Anonymous

2007-11-08 13:36:38 · 3 answers · asked by Anonymous

2007-11-08 13:30:25 · 5 answers · asked by zelda2536 1

Can someone give me 3 thing Lithium is used for.

2007-11-08 12:54:33 · 5 answers · asked by JerBear 3

Can someone give me 3 thing Lithium is used for.

2007-11-08 12:54:18 · 2 answers · asked by JerBear 3

A 2.00-kg metal object requires 5020 J of heat to raise its temperature from 20.0°C to 40.0°C. What is the specific heat capacity of the metal?

2007-11-08 12:19:21 · 1 answers · asked by 1337Haxor 2

2007-11-08 12:04:55 · 3 answers · asked by Mike 2

a)ignition switch
b)starter relay
c)ignition coil
d)starting safety switch

2007-11-08 11:56:52 · 3 answers · asked by clied 1

An 8kHz sinusoidal voltage is applied to a series RC circuit. What is the frequency of the voltage across the resistor?

2007-11-08 11:43:07 · 3 answers · asked by dubel d 1

2007-11-08 11:02:31 · 10 answers · asked by HELP ME PASS 1

How do you convert MM to NM to UM

2007-11-08 10:35:18 · 3 answers · asked by celticboy831 2

we will be integrating GPS (garming 16-LVS) and INS (ADIS16355) that would be used for real time tracking of a vehicle. do you think this would be enough to provide a good result? Due to limits in budget what suggestions do you have?

2007-11-08 10:31:09 · 2 answers · asked by e! boquiren 2

I wan to take silicon and grow them to make photo voltaic cells.
I need to the type of equipment to buy so I can set up a silicon growing factry. So any information would be a greaat help.
Billy Hendrix 407-880-5887

2007-11-08 10:21:25 · 1 answers · asked by billy h 1

2007-11-08 10:13:17 · 8 answers · asked by Anonymous

My electric bill per month averages 1800 kWh per month. I am looking at 165W solar panels. How many panels would I need to make my bill come to zero? I realize I also need an inverter to convert dc to ac.

2007-11-08 09:41:08 · 7 answers · asked by Neil 7

2007-11-08 09:24:49 · 3 answers · asked by Paul G 1

2007-11-08 09:15:20 · 1 answers · asked by Anonymous

What is PAPER CLIP, ELECTRICAL WIRE, SPOON, SAFETY PIN AND KITCHEN FOILS made out of?

3 choices for each is Steel (iron), alluminium and copper.
Please? help me.

2007-11-08 09:01:40 · 9 answers · asked by Anonymous

6,000 BTUs is equal to how many watts?
1 BTU is equal to how many watts?

2007-11-08 08:35:25 · 6 answers · asked by klg1128 1

Do you think that various scientific principles are violated and even downgraded by the official 'explanation' of the tragic events of 9/11/2001 ? For example, in matters such as planes entering steel framed buildings, tower collapses, the apparent speeds of planes at low altitude, etc etc. ? That we have been, in fact, presiding over Mickey Mouse style 'explanations' which have undermined real respect for scientific principles ?

2007-11-08 08:27:20 · 7 answers · asked by democracynow 2

Just wondering if its possible to improve an invention, or a product thats currently out in circulation ...?

Inventing, yes... you can ... but how do you get a product into circulation...?


TNX

2007-11-08 05:21:54 · 3 answers · asked by Anonymous

I have a metal-cutting bandsaw but the blade slips on the wheels. I have tightened the blade and made sure the wheels are grease-free but it still slips so that I have to lift it just as it starts to 'stick'. Then it frees up, get a bit of steam going and cuts a bit more..then stops again. The blade doesn't come off the wheels so the alignment is true. The belt seems tight enough (good high-pitched 'ping' when pinged). Its a low-end of the range item (Clarke, 'Metalworker' 4.5'' bandsaw)) because I don't need it to run all the time and the instruction manually is basically crap. Anyone got some advice??

2007-11-08 00:50:34 · 6 answers · asked by Persevere 4

2007-11-08 00:42:23 · 2 answers · asked by jvictor312 1

Electronics - microcontroler - programmer

2007-11-07 16:27:01 · 1 answers · asked by Roohallah M 1