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1 Lemon juice preventing oxidation: Question: Why does lemon juice prevent the oxidation and browning of apples? What is the chemical reaction? annette l rubin Answer: My guess would be that the oxidation process is pH dependent. By adding the lemon juice, you lower the pH (lemon juice...

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Learning Level: Automated estimate indicates when resources can be used for students.Freshman/Sophomore College
Tags: Tags are terms given by individual agencies to describe their resources.Department of Energy | Scientists Supporting Education: Ask A Scientist | Text | English
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2 Reversed Current, DC Motor Brushes: Question: What is the effect on DC motor brushes if the motor is hooked to opposite polarity on power supply? -/ Hi Thomas I am not exactly sure what...

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Learning Level: Automated estimate indicates when resources can be used for students.Freshman/Sophomore College
Tags: Tags are terms given by individual agencies to describe their resources.Department of Energy | Scientists Supporting Education: Ask A Scientist | Text | English
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3 Photon Transport Time: Question - About how long would it take a photon to travel from the center of the sun to the surface of the sun? - According to Edward Teller: "I knew from my work with Gamow that opacities-the ease or difficulty...

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Learning Level: Automated estimate indicates when resources can be used for students.Freshman/Sophomore College
Tags: Tags are terms given by individual agencies to describe their resources.Department of Energy | Scientists Supporting Education: Ask A Scientist | Text | English
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4 Earth's rotation and wobble questions: Ask A Scientist[Copyright] Astronomy Archive Earth's rotation and wobble questions Author: m negus What determines the present rotation speed of the Earth? What started the planets spinning? Why is the Earth subject to a wobble? Since the mass of the Earth is changing...why not it is rotation? Does mass/density/physica...

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Learning Level: Automated estimate indicates when resources can be used for students.Freshman/Sophomore College
Tags: Tags are terms given by individual agencies to describe their resources.Department of Energy | Scientists Supporting Education: Ask A Scientist | Text | English
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5 Owlet Calls: Question - We have woods behind our home and there are a lot of hawks. I do not know what kind, we live in the northeast, a Pittsburgh suburb. Recently, one hawk calls at almost all night long and it sounds like another one from a...

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Learning Level: Automated estimate indicates when resources can be used for students.Freshman/Sophomore College
Tags: Tags are terms given by individual agencies to describe their resources.Department of Energy | Scientists Supporting Education: Ask A Scientist | Text | English
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6 Government preservation of rainforests: Ask A Scientist[Copyright] Environmental Science Archive Government preservation of rainforests Author: carl What is our government doing to help the preservation of the rainforests? Response #: 1 of 1 Author: mortis Read Al Gore's book "Earth in the Balance", and write to him if you still have questions. I just found...

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Learning Level: Automated estimate indicates when resources can be used for students.Freshman/Sophomore College
Tags: Tags are terms given by individual agencies to describe their resources.Department of Energy | Scientists Supporting Education: Ask A Scientist | Text | English
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7 Teleport Project: Question: My partner and I need all the information possible on teleportation as in transporting objects from place to place. You can answer me here or e-mail me at passmore@chaos.scl.ameslab.gov Any help will be appreciated. nicholas Answer 1: For the...

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Learning Level: Automated estimate indicates when resources can be used for students.Freshman/Sophomore College
Tags: Tags are terms given by individual agencies to describe their resources.Department of Energy | Scientists Supporting Education: Ask A Scientist | Text | English
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8 Vinegar, Baking Soda and Drains: Question - Hello, I have read many of the questions about baking soda and vinegar, and many of my questions were answered already (thank you). I am, however, still not quite sure what it is that helps...

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Learning Level: Automated estimate indicates when resources can be used for students.Freshman/Sophomore College
Tags: Tags are terms given by individual agencies to describe their resources.Department of Energy | Scientists Supporting Education: Ask A Scientist | Text | English
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9 Walnut Tree and Tomatoes: Question - Our neighbor has a black walnut tree. We have tried to plant tomatoes and cucumbers in our garden. They do okay for a period of time and then they eventually die. The neighbor is going to cut the walnut tree down. Will...

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Learning Level: Automated estimate indicates when resources can be used for students.Freshman/Sophomore College
Tags: Tags are terms given by individual agencies to describe their resources.Department of Energy | Scientists Supporting Education: Ask A Scientist | Text | English
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10 Chlorine in Salt Flame Test: Question - When putting a nichrome wire with NaCl over a Bunsen burner, I observe an orange color, which comes from the cation Na+. I know what happens to the cation. But what happens to the anion? Where does it...

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Learning Level: Automated estimate indicates when resources can be used for students.Freshman/Sophomore College
Tags: Tags are terms given by individual agencies to describe their resources.Department of Energy | Scientists Supporting Education: Ask A Scientist | Text | English
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