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Thread: Official BMGf Homework Tutor/Help Thread

  1. #46
    IT'S A CLEMUSKETEER!!! IslandWalker's Avatar
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    Default Re: Official BMGf Homework Tutor/Help Thread

    Just one question, can we give help even if we're not signed up as a tutor? If you can't, sign me up for technology. I'm an 8th grader, so don't expect much if you're in high school or college.

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    Default Re: Official BMGf Homework Tutor/Help Thread

    Quote Originally Posted by IslandWalker View Post
    Just one question, can we give help even if we're not signed up as a tutor? If you can't, sign me up for technology. I'm an 8th grader, so don't expect much if you're in high school or college.
    Yes, you can. Signing up is just to let other users know where you area of expertise is.

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    IT'S A CLEMUSKETEER!!! IslandWalker's Avatar
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    Default Re: Official BMGf Homework Tutor/Help Thread

    Oh. Thanks! I can also offer a bit of other help besides that. Oh, and a bit off-topic, but congrats for becoming a mod!!!

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    Default Re: Official BMGf Homework Tutor/Help Thread

    I was looking for something like this! :)
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    Default Re: Official BMGf Homework Tutor/Help Thread

    Quote Originally Posted by IslandWalker View Post
    Just one question, can we give help even if we're not signed up as a tutor? If you can't, sign me up for technology. I'm an 8th grader, so don't expect much if you're in high school or college.
    OMG I was just gonna ask for technology to!

    May I be both Math and Tech?

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    Default Re: Official BMGf Homework Tutor/Help Thread

    Quote Originally Posted by MuffinPaula View Post
    OMG I was just gonna ask for technology to!

    May I be both Math and Tech?
    Certainly, MuffinPaula.

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    The Redeemed Hero CuboneKing's Avatar
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    Default Re: Official BMGf Homework Tutor/Help Thread

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    Default Re: Official BMGf Homework Tutor/Help Thread

    I can help with math if need be. I've taken Geometry, Algebra 1&2, and am currently in Pre-Calculus. I'm a junior in high school.
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    Default Re: Official BMGf Homework Tutor/Help Thread

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    Default Re: Official BMGf Homework Tutor/Help Thread

    Username: Garluneg
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    Default Re: Official BMGf Homework Tutor/Help Thread

    Username: Aaetos
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    I'd be happy to help. ^^

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    Default Re: Official BMGf Homework Tutor/Help Thread

    It seems to me we've got far more people volunteering to help than people looking for help.
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    Default Re: Official BMGf Homework Tutor/Help Thread

    Quote Originally Posted by Rakarei View Post
    It seems to me we've got far more people volunteering to help than people looking for help.
    Hopefully, people will start asking questions.

  14. #59
    Now with capital letter Pseudonym's Avatar
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    Default Re: Official BMGf Homework Tutor/Help Thread

    Quote Originally Posted by Green View Post
    Hopefully, people will start asking questions.
    I'll start by a little Physics problem that I don't understand, if someone could answer it I'd really appreciate it.

    I know that in the US, people work with Farenheit degrees but I guess that's quite irrelevant.

    It says that an ice cube of 100 gr at 0ºC falls in 1 kg of water that has a temperature of 80ºC. So they're asking what's the final temperature of the water once the ice cube has melted.

    I'd be glad if a Physics tutor would help me out with this one, thanks.
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    Default Re: Official BMGf Homework Tutor/Help Thread

    Quote Originally Posted by pseudonym12 View Post
    I'll start by a little Physics problem that I don't understand, if someone could answer it I'd really appreciate it.

    I know that in the US, people work with Farenheit degrees but I guess that's quite irrelevant.

    It says that an ice cube of 100 gr at 0ºC falls in 1 kg of water that has a temperature of 80ºC. So they're asking what's the final temperature of the water once the ice cube has melted.

    I'd be glad if a Physics tutor would help me out with this one, thanks.
    I'm not sure if I remember how to solve these kinds of problems but I'll give it a shot.

    Assuming the heat of fusion for ice is 334 J/g, the amount of energy required to melt 100g of ice is (100g)*(334J/g) = 33400J. This amount of energy must be absorbed from the rest of the system. The following equation can be used to determine the temperature change of the water:



    (q is the energy transferred, m is the mass of the substance, c is specific heat capacity of the substance, delta T is the change in temperature)

    Substituting in all known values, we are left with

    -33400J = (1000g)*(4.184J/g*C)*delta T

    Solving for delta T, we have

    delta T = (-33400J)/[(1000g)*(4.184J/g*C)] ≈ -7.98 degree C

    Solving for the final temperature, we get

    80 degree C + (-7.98 degree C) = 72.0 degree C

    You can adjust these values for significant figures as you see fit. You also may want to check my work to see if I made any mistakes.

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