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| Expert | Average Ratings | Expertise |
|---|---|---|
Sue KaytonU.S.
Available
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I can answer almost any student science question! I especially like ones involving silkworms, spacecraft and computers. | |
Ralph Salier-HellendagAvailable
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Science Fair Judge for many years and experience with robotics, biology, chemistry, industrial processes, metalurgy and metal forming. | |
walter hintzU.S.
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I can answer questions from kids in all grades in the areas of general science, biology and nature study | |
Robert leeU.S.
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I can answer mostly science questions on the solar systems formation, it's relationship to all within our orb cloud. Keplers laws of planetary motion, his relationship to Tycho Brahe, which led to, his discovery of the unusual orbit of Mars which was explained in his publications. Geo-science,planetary science, geography, oceanography,astronomy,astrophysics, from the mercury space missions to the shuttle and all in between including the Russian and chinese missions to space. |
Hi Phoebe, Since it does not need to be functional, it better that the wire not be connected to the battery. You can put a switch into the circuit if you want but the wire if connected to the live
Hi Phoebe, No, you have what you need. Just don't attach the wire to the battery or it will heat up and could cause a fire. You can get Nichrome wire from a repair parts store or a broken toaster
The dependent variable (the output that you measure) is the speed of the falling object, or how long it takes to hit the ground. There can be many independent variables, such as object size, object
Here is a quick simple experiment you can do at home or school, sharpen some pencils and push them half way through a zip lock plastic bag filled with water, the water does not spill because the polymers
Hi again milly If you have completed the experiment already you already know the answers to your first question. As to how long it stays there all you can do is wait and see. For the science behind it
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