• How do I stretch a piece of steel?

    with my bare hands?
    with my bare hands?
    16 answers · 3 days ago
  • Why does water spin when it's flushing away?

    Best answer: It is difficult to achieve such perfectly balanced and still conditions that water will drain straight down an outlet at the bottom of a tub, sink, or toilet. There is almost always some residual motion in the water that starts it spilling into the drain faster over one side of the lip than the other. After that... show more
    Best answer: It is difficult to achieve such perfectly balanced and still conditions that water will drain straight down an outlet at the bottom of a tub, sink, or toilet. There is almost always some residual motion in the water that starts it spilling into the drain faster over one side of the lip than the other. After that starts, it simply becomes more and more noticeable. Often there is an irregularity to the drain lip, or to the shape of the vessel that's being drained, which sets up the imbalance.

    Most people believe that the swirl will normally go in one direction in the northern hemisphere, and the opposite direction in the southern hemisphere, and that the swirl itself is a result of the rotation of Earth. They refer to this as the "Coriolis effect". Even though this is very widely believed, it is not true.
    6 answers · 1 day ago
  • Who would I call if a transformer blows?

    11 answers · 4 days ago
  • [Arduino/electronics question] why isn't the analog data I am receiving from a linear potentiometer also linear?

    I have a plunger potentiometer that I know to be quite linear in terms of resitance taper. The image with the y scale on the order of thousands shows this, using data I collected myself. The second image shows the voltage measured by an analog input pin on an Arduino UNO, where the reading is coming from the wiper... show more
    I have a plunger potentiometer that I know to be quite linear in terms of resitance taper. The image with the y scale on the order of thousands shows this, using data I collected myself. The second image shows the voltage measured by an analog input pin on an Arduino UNO, where the reading is coming from the wiper and the potentiometer is acting as a potential divider, with the same Arduino's ground and +5v connected across it. I can't figure out why the two charts don't look almost identical, save for a different y scale. My guess is that this must be caused by the +5v from the arduino being non-constant (but the Arduino has a voltage regulator no??) . In both cases the x axis represents mm of travel of the pot shaft.
    7 answers · 2 days ago
  • What if the Egyptians had decided to build the pyramids higher?

    Hypothetically what if any extra engineering challenges would they have faced? Is there a maximum height beyond which the weight will cause it to fall down? A mountain does not fall down so a pyramid should follow the same logic, right? What if the pharaoh had decided the Great pyramids height of 150 metres was not... show more
    Hypothetically what if any extra engineering challenges would they have faced? Is there a maximum height beyond which the weight will cause it to fall down? A mountain does not fall down so a pyramid should follow the same logic, right? What if the pharaoh had decided the Great pyramids height of 150 metres was not big enough and it should be 10 times higher? Assuming that labour and materials are not a problem and they have 1000 years to build the darn thing, could they just continue stacking stones up to 1500 metres height?
    6 answers · 2 days ago
  • How many composite materials are available in the market?

    Hi I'd like to know the number of composite materials available in the market and please reference your source of the answer as I'll be needing it for the report I'm writing.
    Hi I'd like to know the number of composite materials available in the market and please reference your source of the answer as I'll be needing it for the report I'm writing.
    4 answers · 10 hours ago
  • YOU MUST CONSTRUCT ADDITIONAL PYLONS?

    4 answers · 2 days ago
  • If I have a 5 year university degree and my colleague has a 2 year mechanical design degree how can he get more money than I do?

    I recently started at a consulting agency and we will both start our assignments next week. It's the same company but two different jobs. I will work as a mechanical designer and assist the main engineers with various drawing, models and work with CAD/CAM programs. I'll also do calculations and things like... show more
    I recently started at a consulting agency and we will both start our assignments next week. It's the same company but two different jobs. I will work as a mechanical designer and assist the main engineers with various drawing, models and work with CAD/CAM programs. I'll also do calculations and things like that. I have a masters degree in engineering. My colleague has a 2 year associates degree but he has more experience. He has worked 4-5 years after school. He has more experience with production and working with his hands. He will work as a production coordinator and will try to bridge the gab between the engineering department and production and he will also do risk analysis and try to minimize errors in the assembling process. I am not saying that he shouldn't get more pay or that he doesn't deserve it. I am just surprised that despite all my years in school he gets 40 percent more than I get. It's a lot of money. Is it normally like that?
    13 answers · 1 week ago
  • Electrical Engineering Circuit Problem?

    Electrical Engineering Circuit Problem?

    how do you solve this?
    how do you solve this?
    4 answers · 2 days ago
  • What device should i include in my inverter module (12 volt dc to 220 volt ac) to regulate my frequency?

    I Require this for my project please help me if you could.. :) Hope you would have gone through the specifications, features and special remind from the link. ( https://www.tomtop.com/p-e1751.html ) Here are my doubts, (i) The output frequency as it is mentioned is 20kHz, as in India i require the output as... show more
    I Require this for my project please help me if you could.. :) Hope you would have gone through the specifications, features and special remind from the link. ( https://www.tomtop.com/p-e1751.html ) Here are my doubts, (i) The output frequency as it is mentioned is 20kHz, as in India i require the output as 50Hz . how do i alter the frequency? (ii) For making myself an inverter, like is it enough if i connect a battery to it and take the output from the corresponding outlets? or any other additional devices to be connected? ( like high frequency diode rectifier as mentioned in website) (iii) Any ratings of the battery should i look for apart from 12V? (iv) Any safety precautions or devices additionally required..? (Should any cooling fan is required at the heat sink? I would Be very Thankful for your reply!!
    4 answers · 2 days ago
  • Does anyone know of a good mechanical pencil for marking on galvanized steel?

    Work with a lot of galvanized steel and using a soap stone doesn t show very well and I have to resharpen it every time I use it to keep the lines tight so it will be accurate. Pencils work best but just like the soap stone, they dull out quickly. Is there a mechanical pencil out there that s durable that I could... show more
    Work with a lot of galvanized steel and using a soap stone doesn t show very well and I have to resharpen it every time I use it to keep the lines tight so it will be accurate. Pencils work best but just like the soap stone, they dull out quickly. Is there a mechanical pencil out there that s durable that I could use so I don t have to stop to sharpen it every time?
    7 answers · 5 days ago
  • Do you think this will work to prevent future forest fires in California. If a network of water pipes with sprinkler valves would be?

    Best answer: That is silly.
    California law states that water cannot be diverted from the habitat of the Delta smelt.
    Saving the habitat of the Delta smelt is more important than saving all the homes (human habitat) in California, according to the liberal environmentalists.
    Best answer: That is silly.
    California law states that water cannot be diverted from the habitat of the Delta smelt.
    Saving the habitat of the Delta smelt is more important than saving all the homes (human habitat) in California, according to the liberal environmentalists.
    6 answers · 5 days ago