SBEC Chemistry and Physics

40 Responses to “Chemistry 11-6-09 The Photoelectric Effect”

1.   Avery Paxton C1 Says:
   November 6th, 2009 at 11:27 PM

   What is the symbol for frequency?

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   Emily Lunati Reply:
   November 11th, 2009 at 10:05 AM

   The symbol is v, which is pronounced as “nu”.

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   Nick A. C7 Reply:
   November 12th, 2009 at 9:28 PM

   Ave, the symbol is V. It can also be expressed in Hertz(Hz).

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2.   Brent Thornton C1 Says:
   November 6th, 2009 at 11:53 PM

   Avery: it is v but the greek version. What is the unit?

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   Drew Fondren C6 Reply:
   November 10th, 2009 at 6:18 PM

   Hertz

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3.   AGreer c1 Says:
   November 7th, 2009 at 12:30 AM

   What is the word for the symbol of wavelength?

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   bree medlock C6 Reply:
   November 12th, 2009 at 9:39 PM

   the symbol for wavelength is called a lamda..and it looks like an upside down y.

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4.   #56 Ryne L. C6 Says:
   November 7th, 2009 at 12:53 AM

   i think it is called a lambda..whew…got it with 9 minutes before midnight

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5.   #56 Ryne L. C6 Says:
   November 7th, 2009 at 12:54 AM

   woah that says 12:53, its only 11:53

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6.   ZachCookston C1 Says:
   November 7th, 2009 at 1:12 AM

   I think its hertz Brent

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7.   Megan Grice Says:
   November 9th, 2009 at 8:35 PM

   how does changing the color of the light make more or less electrons come off of the metal plate on that animation we saw?

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   Emily Lunati Reply:
   November 11th, 2009 at 10:11 AM

   The number of electrons that come off the metal plate depends on the amount of energy that light produces. So, for example, an ultraviolet light can knock off more particles from the metal plate than an infrared light.

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   Emily Lunati C1 Reply:
   November 11th, 2009 at 10:12 AM

   I forgot the “C1″ Hehe, oops.

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8.   Morgan J, C7 Says:
   November 10th, 2009 at 6:33 PM

   Did anyone understand how to do problem #50 on the homework we had over the weekend?

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9.   Lauren Farrior C7 Says:
   November 10th, 2009 at 6:41 PM

   What is the topic for Science In The News this week?

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   #56 Ryne L. C6 Reply:
   November 11th, 2009 at 9:46 PM

   it is #58 on page 127…
   Ms Skinner- are we supposed to just print an article and highlight it or regular SItN format

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10.   rebekahw c1 Says:
    November 11th, 2009 at 10:07 AM

    on science in the news this week, do we just have to get an article about the photoelectric effect or do we also do what number 58 in the book says?

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11.   Morgan Cox c6 Says:
    November 11th, 2009 at 10:09 AM

    hey! can anybody give me an everyday example of the photoelectric effect?

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    Katie Hughes C7 Reply:
    November 11th, 2009 at 10:13 AM

    hey morgan. one example is an elevator sensor:)

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12.   brandon cox Says:
    November 11th, 2009 at 6:17 PM

    what is the easiest way to find wavelenght?

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    rebekah wilson c1 Reply:
    November 12th, 2009 at 10:55 AM

    wavelength is speed divided by frequency

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13.   Tori W C2 Says:
    November 11th, 2009 at 6:44 PM

    what does the “h” in the energy formula stand for?

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    kaitlyn vincent c-6 Reply:
    November 11th, 2009 at 7:30 PM

    i’m pretty sure its Plancks constant which is 6.626 X 10 to the -34

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14.   mfilka c1 Says:
    November 11th, 2009 at 7:16 PM

    i think we should review over sig figs again because i missed a lot of problems on the test because of that

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15.   Matt DeBerry--C1 Says:
    November 11th, 2009 at 7:50 PM

    Mrs.Skinner can you please explain sig figs again?

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16.   courtney huie c6 Says:
    November 11th, 2009 at 8:15 PM

    how can i get extra practice on frequency problems? i dont get them….

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17.   Kamren Joe c6 Says:
    November 11th, 2009 at 9:03 PM

    Does the visible spectrum start with violet or red?

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    Heather Ingram Reply:
    November 12th, 2009 at 5:59 PM

    I believe it starts with violet and ends with red:)

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18.   Katie Ligon C1 Says:
    November 11th, 2009 at 9:15 PM

    Kamren:

    I think the visible spectrum starts with violet, but i’m not sure

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19.   Katie Ligon C1 Says:
    November 11th, 2009 at 9:15 PM

    Which has the highest frequency? violet or red???

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    Annalee S HC4 Reply:
    November 12th, 2009 at 6:27 PM

    violet has the highest frequency because it has the shortest wavelength

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20.   Anna C2 Says:
    November 11th, 2009 at 10:03 PM

    i believe red has the highest frequency

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21.   JKimberlin C-1 Says:
    November 11th, 2009 at 10:35 PM

    on our science in the news this week do we have to describe the photoelectrical effect or do we need to have a normal article about the photoelectric effect with someone quoted?

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22.   Philip B c1 Says:
    November 12th, 2009 at 1:40 PM

    on our article do we use the normal thing or do we do it differently

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    Ms. Skinner Reply:
    November 12th, 2009 at 10:19 PM

    Phillip – We’ve been missing you! Are you feeling better? Use #58 in the book as your topic, but do it like a regular science in the news. The only difference is that it can be older than this year, and it doesn’t have to have an official “author.” You can just take a quote from the article. Hope you get to come back soon!

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23.   Connor D C 1 Says:
    November 12th, 2009 at 6:00 PM

    violet is the starting point of the spectrum starting at 400

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24.   Ashley Stallings C-6 Says:
    November 12th, 2009 at 6:01 PM

    Ms. Skinner, are you going to do a help session for this lesson because I don’t get a lot of it.

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25.   Claire H, C2 Says:
    November 12th, 2009 at 7:53 PM

    whats the correct order of all the colors in the visible spectrum?

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    Brett PolischeckC1 Reply:
    November 13th, 2009 at 8:11 PM

    from left to right its red yellow, green, light blue, dark blue, violent

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26.   Ms. Skinner Says:
    November 12th, 2009 at 10:22 PM

    Everyone clear on the SItN on the photoelectric effect? Get the topic from #58 in the book, but do it just like a regular SItN.

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