Recent content by chiuda

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    Dynamics Problem (suitcase pulled across floor find Fn)

    ok i used the info from B and got it, thanks physics friends :)
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    Static friction and fraction of mass of rope that can hang.

    Homework Statement The coefficient of static friction between a rope and the table on which it rests is μ. Find the fraction of the rope that can hang over the edge of the table before it begins to slip. Express your answer in terms of μ. Homework Equations The Attempt at a...
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    Dynamics Problem (suitcase pulled across floor find Fn)

    Ya ot gives me coeff of kin friction and assume acceleration is zero in part be and qith that I know how to do it but I just wanted to see if you could do it without it for A because it wasnt given for that part
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    Dynamics Problem (suitcase pulled across floor find Fn)

    There is info given for part b but for this part (part a) my assignment expects me to complete it without any other info, but it seems to me that it can not be done, but often I know the imposible is possible in physics, hence why I came here :P
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    Dynamics Problem (suitcase pulled across floor find Fn)

    Homework Statement At the airport, you pull a 20 suitcase across the floor with a strap that is at an angle of 42° above the horizontal.Find the Normal Force. Homework Equations The Attempt at a Solution I have broken it down into all equations with just variables trying so...
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    Understanding the Cosine Inverse Function and the Cast Rule

    Right?
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    Understanding the Cosine Inverse Function and the Cast Rule

    Related acute angle sorry. If cos is neg then it must be in quadrant 3 or 4.
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    Understanding the Cosine Inverse Function and the Cast Rule

    I am currently doing a trig question and trying to find the location of the acute angles of cosine inverse and I am just wondering if cosine inverse follow the cast rule? In other words would it be positive where cos would be positive or not?
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    P(t)=6t^4-5t^3+200t=1200 what is t if p is 175000?

    Alright. Were you saying that to solve for the approximate I would just keep subbing in numbers until I got aprox. 175000. If so this seems very inefficient, are their any concrete and less exhausting ways to get the answer?
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    P(t)=6t^4-5t^3+200t=1200 what is t if p is 175000?

    yes i didn't get any further after that though so i thought someone might be able to help out with the problem am having :)
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    P(t)=6t^4-5t^3+200t=1200 what is t if p is 175000?

    It is an equation to do with population growth it asks approximately when (t- time in years) will population(p) be 175 000 I honestly can't figure it out this is far as i get p(t)=6t^4-5t^3+200t+12000 175000=6t^4-5t^3+200t+12000 0=6t^4-5t^3+200t-163000 I honestly don't know what to...
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    Understanding Doppler Formula: Solving for Vs and Equivalencies

    then i would have f2*(1-Vs/Vw) which is not the same as f2/ (1-Vs/Vw) :S
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    Understanding Doppler Formula: Solving for Vs and Equivalencies

    yes i understand that part but let's say the 2nd eqn was already -vs how does one get from the first equation to the second one? it would be very appreciated if all the steps could be shown thank you :)
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    Understanding Doppler Formula: Solving for Vs and Equivalencies

    doppler formula help please!:) Hello, i see the doppler formula in 2 different forms one being f1=f2 (Vw/Vw-Vs) and the other f1=f2/(1+Vs/Vw) f1= Doppler frequency f2= Source frequency Vw= Speed of sound Vs= Speed of source the problem i am having is understanding how these are...
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    Forces of static friction question

    Kk I'm good now thank you so much for the help I really appreciate it I wasn't thinking about the tires direction I was thinking about the car body itself.