Engineering

Michael Guenther From Long Beach, asks,

Do you know of any analysis or test data available to show that aluminum will not spark if struck against aluminum, stainless steel, or any other...


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Mark McDonald From Morgan Hill, asks,

I am interested in the transmission of RF through different materials (especially water). I am trying to understand for instance, how much an RF...


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v atech From virginia, asks,

What is the efficiency of a typical jet engine? i.e. how much of the fuel is actually used making the plane fly and how much is wasted in the form of...


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William Kirwan From Limerick Republic of Ireland, asks,

How much heat energy (watts) is released from the human body? Is there a relation to the area of skin exposed, if so can one determine how much...


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Melodia From Montreal, asks,

Approximately how many nuclear tests do the americans alone conduct every...


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Jason From Virginia, asks,

What is the effect of sound on plants? I have come up with a lot of good information, but I have yet to develop a good way of testing my thesis. I...


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Matt Hiemenz From Manitoba, asks,

Electricity. It powers almost all household appliances as well as the complex electronics we rely on to execute complex programs. I am wondering...


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Harshita From Sydney, asks,

I have conducted an experiment with a parachute. I was investigating whether the time taken to reach the ground for a parachute was altered by the...


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Jenny From Toronto, asks,

What do paper and plastic bags degrade to? How much does it cost to make a paper and plastic...


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Johnathan From Sydney, asks,

What happens when you use ethanol (unblended) in a standard, unleaded car engine? Will it...


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Satnam From Calgary, asks,

My question: How will they produce plastics, tires, roads or anything that is made from oil, once oil runs...


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Engineering

Sam Thomas From Kallaroo WA , Australia, asks,

If splitting the atom can create a huge amount of energy, then why isn't it used to power engines instead of...


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Engineering

Damanjit Singh From New Delhi, India, asks,

What will happen if we use petrol in a diesel engine or vice...


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Engineering

luke kujawa From armada, asks,

What is the chemical composition of basic aluminum, steel, and brass, and which metal conducts heat the best and...


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Engineering

Tim Wiebe asks,

Since a plane's wing is designed to fly right side up, how does a plane stay up in the air when it is flying upside...


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Engineering

Umit Koseoglu asks,

Is it possible to make a soap bubble that you can get...


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Engineering

Ethan Heil From Salem, VA, asks,

I am doing a research project on the strength of different batteries. Is there a cheap way to test a battery for factors like discharge, besides...


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Engineering

Don Ryan From St. John's, NL, asks,

Lightning strikes produce huge amounts of electricity. Has science looked at ways to store and use this electricity as an alternative energy source?...


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Engineering

Gloria From Toronto, asks,

On average, how much petrol is burned per minute of...


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Engineering

Christian Martel From Montreal, QC, asks,

Would you know where I can find the temperature at which paper burns, and where I can find data for different types of paper. I thought I would find...


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Engineering

Philip Newman asks,

How does a boat float? What is the scientific...


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Engineering

Jasmin From Brighton, asks,

Why are tanks (such as scuba diving tanks, for example) always designed in a cylindrical shape? In other words, are there mechanical principles that...


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Engineering

James Hope From Gloucester, UK, asks,

My dad was saying that radio waves from TV transmitter stations can burn you severely if you are near the transmitter. However according to E=hf, a...


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Engineering

Roman Tanisis From Surrey, BC, asks,

I have an FM transmitter for my iPod. I find that when my hand is within 5 centimetres proximity to the transmitter or physically in contact, the...


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Engineering

Sean Polreis From Saskatoon, asks,

Suppose a truck transporting birds is weighed. Will there be a difference in weight depending on whether or not the birds are in flight or standing...


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Engineering

Semutblue From the Internet, asks,

Is there a liquid chemical that will glow when electricity is passed through it? What voltage would be...


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Engineering

Ken Hood From Batamans Bay, Australia, asks,

Can a normal late model petrol car engine be coverted to run on almost pure ethanol? How is this...


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Engineering

Ernie Epp From Kenora, ON Canada, asks,

Regarding the behaviour of a high-voltage spark. I have a device which generates a pulse of high-voltage of about 20,000 volts at about two...


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Engineering

Doug Tare From Freehold, asks,

Since hydrogen is being considered for fuel purposes it's minimum ignition energy (m.i.e.) of .02 mJ maybe of concern. Gasoline fumes have a higher...


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Engineering

Paul Paura From Mississauga, asks,

how will Hydrogen work as an Assist Gas for Diesel Trucks (Transportation Industry). After doing much research over the last 12 months, I found that...


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Engineering

Matt From the Internet, asks,

Why are 6volt batteries bigger than 9volts, even though 6 volts are less than 9? And why are AA, AAA, C, and D batteries all 1.5 volts, but of...


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Engineering

Amy B From the Internet, asks,

It is snowing today and the wind is blowing from the east but the snow is collecting on the west side of my car. Why is...


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Engineering

Cathy From Thorhild, Alberta, Canada, asks,

How can we manually assist the freezing process of the ground. Temperatures have been above normally warm in the mid-northern part of Alberta,...


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Engineering

Apurba Kanjilal From India, asks,

How are sparks generated from flint, quartz, and metals? What burns during a spark? How do the non-sparking tools prevent or reduce...


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Engineering

Angelo From Mississauga, asks,

Why is styrofoam a good...


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Engineering

Susana From Germany, asks,

I would like to know why Russian rocket engines use 4 nozzles and American ones just one. What advantages and disadvantages are there? What other...


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Engineering

Gord Vance From Ottawa, asks,

Could Uranium 238 be used in conjunction with photovoltaic cells in order to create a viable power...


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Engineering

cheryl From singapore, asks,

I read that to find the efficiency of a fractional distillation column, you can distill a mixture of 20% n-heptane (bp=98°C) and 80%...


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Engineering

Anonymous From the Internet, asks,

What would happen if nuclear waste was dumped into a lava flow or a...


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Engineering

Gareth Cook asks,

How do "security tags" in shops work? I'm referring to the white plastic, bar-coded tags containing two differently shaped (one is rectangular and...


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Engineering

Lindsay From New York City, asks,

What is the chemical make-up of film? I am searching for a detailed make-up of either 35mm film for photography or film that is used in the...


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Engineering

Talha asks,

What is electrical engineering? What is the difference between electrical engineering and electronics...


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Engineering

Joanna From Melbourne, Australia, asks,

There are 2 routes I could take between home and work and they each take about the same amount of time to travel. One route is shorter in distance,...


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Engineering

Anonymous From the Internet, asks,

Do all pencil lead erase the same? Why or why not? Which pencil lead erases the...


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Engineering

Mark Bodnar From Abilene, Texas, U.S.A., asks,

Can you help me find a simple definition of "inertial coupling" (if there is a simple definition). It's an aeronautics term. I did write to NASA a...


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Engineering

Beth Conrad From Hong Kong, asks,

How can I build a water...


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Engineering

Leo Molenaar asks,

Is the up and down movement of a piston in a combustion engine a waste of impulse energy? The piston has to slow down to a stop then accelerate to...


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Engineering

Jenn From Torrance, asks,

What is the composition of an American nickel? Also, do you think that a nickel has a higher specific heat than a penny does? Please help ... I can't...


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Engineering

Jackie B. From Wisconsin, asks,

Which metal conducts heat the...


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Engineering

Stuart Wills From Brisbane, asks,

I am curious as to how much electricity over given periods of time (instantly to say a 10 seconds) would it take to kill your average garden type...


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Engineering

JWMS Science Class From Winchester, asks,

We are studying the electromagnetic spectrum. We have a question. Can you speed up radio waves? If you can, could they turn into micro-waves? How...


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Engineering

Emma From the Internet, asks,

Why has Aluminium only recently been extracted from its...


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Stef asks,

How are minerals used in the production of Canadian coins? ...


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Engineering

Tony From Melbourne, asks,

In my recent science project, I tried discharging batterys in the freezer, fridge and room. The results were , the lower the temperature the shorter...


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Engineering

Gerald Taylor From El Dorado, Arkansas, asks,

I was wanting to make my own acid stain for concrete. I have muriatic acid and heavy metals available as used in pottery glazes. I would like to try...


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Engineering

Richard Hart From Victoria, BC, Canada, asks,

I am interested in metal fatigue in bicycle frames. Does the steel or aluminum in a bike frame get "tired" after time? If so, how long does it take?...


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Engineering

Donald Plourde From East Mapleton, asks,

If I have two 6 volt lead acid Batteries with a 400 ampere hour charge in each one. And I wire the two batteries in series to give me 12 volts. If no...


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Engineering

Lucy Policelli asks,

Is it feasible to embed microchips carrying pertinent data, health, history, money etc. into...


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Engineering

Willi Luke asks,

I am currently doing research on the e-bow, a guitar effect that calls upon an infinite feedback loop to produce infinite sustain by keeping the...


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Engineering

Adam Moore From Denver, Colorado, asks,

I am in the 6th grade in Denver, Colorado. I made a machine out of 2 by 4s that will kick a ball. I want to see if air pressure in a ball has an...


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Engineering

Travis Cheeseman From Bloomington, IND., asks,

Ok, this is my project: I have put roughly two cups of rice in a sock and threw it in the microwave for four and a half minutes, it kept its warmth...


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Engineering

kirst From the Internet, asks,

What everyday appliance uses...


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Engineering

Sophie From Winnipeg, asks,

Why do street lights shut down, often, when we drive underneath them? Oftentimes, my boyfriend and I notice that lights go off when we drive by -...


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Engineering

Antony St-Jacques From Kingston, asks,

How can I separate NaCl so I can obtain...


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Eddie From Toronto, asks,

I know the basic details of how an ionization smoke detector works, where particles enter the chamber and block the alpha particles so that the...


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Engineering

Robert asks,

What is more efficient: to push or pull a car (front wheel vs. rear wheel...


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Engineering

James Hope From Gloucester, asks,

Last year in school we learned about nuclear decay, and how some atoms decay by releasing gamma rays, which have enough energy to cause damage to...


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Engineering

Mark Brooks From London, asks,

Why do ice cubes melt quicker on stainless steel than a china plate and fire clay?...


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Max From Toronto, asks,

How many water and wastewater treatment plants in Canada are using chlorine gas for...


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Engineering

Chris Chase From Harrisburg, asks,

Has anyone ever weighed nuclear reactions in reactors to see if the reactor weighs more while generating energy? Specifically, I am interested if...


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Engineering

Ian Burke asks,

What do you think of a Gas/Electric hybrid car? I made a power generation device made up of 8 a.c. alternators and I placed a 1:5 ratio step-up...


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Engineering

Melodia From Montreal, asks,

What is the main problem faced by scientists studying the use of nuclear fusion as a source of...


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Engineering

Rena From Thornhill, asks,

For school I need to know about natural convection and forced convection. I need to know the difference. I have looked everywhere but no...


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Engineering

Karan Rustagi From Ontario, asks,

I heard that electricity can be transmitted in other forms than electron flow; like electromagnetic beams. This way we could power appliances or...


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Engineering

collin From fort walton beach, fl, asks,

I just recently did an experiment using paper airplanes with different wing types (swept back at different angles and straight). I found out that the...


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Engineering

Mike Delie From Menomonie, asks,

I'm doing a senior project on recycling, and I'm curious if it uses more energy to mine and convert aluminum into metal than it does to recycle it. ...


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Engineering

Richard From Halifax, N.S., asks,

How do you calculate water flow rate (volume/sec) based on water pressure and hole or pipe size? And is it the same based on water pressure created...


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Engineering

Brian From Avon Lake, asks,

I am doing a report on aluminum and the impact it has on our environment for a science class. Do you know how aluminum is disposed of? And if it...


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Engineering

Kevin asks,

How can I make a plastic object? I want to make a clear or translucent, thin cylinder that is strong enough not to bend or break if I hit it against...


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Engineering

Jennifer Easterly From Sydney, asks,

Does the diameter of a tree have anything to do with the percentage of lichen coverage on the...


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Engineering

Kelvin C From Markham, Ontario, Canada, North America, asks,

I was wondering, what solids or liquids can trap heat in very well, or at least maintain the temperature that the object that's in the material is...


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Engineering

Rick Morrison From Sudbury On, asks,

What makes certain surfaces such as highway lane markings, reflective strips on clothing and highway signs reflective at night?...


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Engineering

umit koseoglu From the Internet, asks,

how would i go about making some dry ice at home or in the school...


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Engineering

Marcos Chimenti From Rio de Janeiro, asks,

Does air act as an insulator against lightning on flying airplanes? I know the aluminum case is highly conductive and works as a Faraday cage (though...


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Engineering

Alex Smith From Owen Sound, asks,

How can I make a simple...


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Engineering

Shauna From the Internet, asks,

How long can a vehicle typically run without oil or antifreeze before the engine...


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Engineering

Don Auld From Vancouver, asks,

In the CANDU nuclear reactor, what initiates the fission process? I understand that the U235 in the fuel will undergo fission if it absorbs a slow...


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Engineering

Azadeh From Tehran, asks,

If we heat a square metal page with a circle hole in the center of it, what will happen to both the square and the hole size after...


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Engineering

Tony Young From Santiago, Dominican Republic, asks,

I have a problem with moisture in my apartment. I live in a Caribbean country and am not able to find a reasonably-priced dehumidifier. Is there any...


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Engineering

Linda O\'Neill From Dartmouth, asks,

How can you define the pressure of 5 g. on a person? This would be done with the fingers. I am trying to figure out how to equate 5 g into pressure...


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Engineering

Andrew Hope From Gloucester, asks,

My son, James, and I cannot agree about the recoil of a gun. I believe that if a gun is fixed in a vice the bullet will go further than if it is...


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Engineering

Ken From Vancouver, asks,

If one could increase the flow of air into a jet engine,would this increase the efficiency of the engine? Are all jet engines affected in the same...


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Engineering

D. Tolenaar asks,

How does air conditioning...


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Engineering

Mike Starry From Fresno, CA, asks,

How and when will hydrogen fuel cells be used to provide electricity for my home? What would it take to make it happen? Is the biggest challenge for...


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Engineering

Phil From Ottawa, asks,

Are there some materials that shrink faster that other materials in cold? If yes, which...


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Engineering

DeeCee From Indianapolis, asks,

How does vacuum insulation work and can an R Value be assigned to it? Does the depth of the vacuum change the R Value? Does the cross sectional...


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Engineering

mark irvine From sacramento, asks,

If you have a square 1 pound block with a front flat surface strike a ball, would it be the same as if you had the same weight block, but cut out in...


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Engineering

Sue Smith From Salem, Oregon, USA, asks,

I am wondering about the difference between wood bats and aluminum alloy bats; I need a simple way of describing the micro-structure of the electrons...


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Engineering

Brandten B Miller From the Internet, asks,

How does the shape of the fuselage affect the glide distance of an aircraft? What is the best aerodynamic design for a...


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Engineering

Yogesh Patil asks,

Can you provide a detailed structure and working of the magnetron tube used in microwave ovens? ...


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