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  • logistic_guy
    logistic_guy replied to the thread temperature and oven.
    🏃‍♀️🏃‍♀️ \mu_3 = \frac{188 + 196 + 195.5 + 212.5}{4} = 198
  • J
    jimi replied to the thread Standard deviation help needed.
    Thank you for replying. I think I understand what you're getting at. Are we to assume that the population is normally distributed? If...
  • Dr.Peterson
    We also aren't told how big the samples are. But we can still think about whether the standard deviation of sample means will be...
  • logistic_guy
    logistic_guy replied to the thread Euler function.
    \textcolor{indigo}{\bold{FINALLY}}😭😭 \varphi(30) = \varphi(2 \times 3 \times 5) = \varphi(2)\varphi(3)\varphi(5) = 2^0(2 - 1)3^0(3 -...
  • K
    khansaheb replied to the thread Work Done query.
    Because during the first day of class of "mechanics of materials", while discussing vector dot-product a similar problem was introduced...
  • J
    Hi all, This is a question from a UK GCSE Statistics paper (June 2024) 'Faiza owns a factory that makes footballs. The production line...
  • logistic_guy
    logistic_guy replied to the thread puzzle - 2.
    \textcolor{darkred}{\bold{MINIMAL}} \longrightarrow \textcolor{red}{\bold{Least}} \huge\textcolor{indigo}{\bold{the \ solution \ so \...
    • image31.jpg
  • A
    apple2357 reacted to The Highlander's post in the thread Work Done query with Like Like.
    Hmmm, you don't appear to have understood what I've been trying to explain... ☹️🤷‍♂️ "the work done by the tension" cannot be...
  • The Highlander
    The Highlander replied to the thread Work Done query.
    Hmmm, you don't appear to have understood what I've been trying to explain... ☹️🤷‍♂️ "the work done by the tension" cannot be...
  • logistic_guy
    logistic_guy replied to the thread Euler function.
    8-)😎 \varphi(29) = 29^0(29 - 1) = \textcolor{red}{\bold{28}}
  • A
    apple2357 replied to the thread Work Done query.
    Musing over.... I think if the question asked something like... Find the work done by the tension Or Find the work done by each of...
  • The Highlander
    The Highlander replied to the thread Work Done query.
    @khansaheb, Not sure why you have introduced this. I don't see how it can help to achieve the desired result. 🤔 (KISS 😉)
  • The Highlander
    The Highlander replied to the thread Work Done query.
    All the Forces involved are, as you recognize, Vector quantities but the Work done (and, indeed, any Work, ie: Energy) is a Scalar...
  • A
    apple2357 replied to the thread Work Done query.
    I was helping a friends son with his maths and i haven't studied too much mechanics and i realised i didn't understand it fully. I was...
  • K
    khansaheb replied to the thread Work Done query.
    So this is a "random" problem from a "maths" book - not related to instruction. Can please tell me what attracted you to this problem?
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