Recent content by c03rcion

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    Is the Job Market Getting *WORSE* for PhDs?

    If its hitting entry-level and mid-level jobs , what ISN'T getting hit hard? As long as the United States government has a vested interest in sticking its nose in other countries affairs, there will always be demand for scientists and technicians in the defense industry, or what Eisenhower...
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    Prooving a projectile motion formula

    can you include a picture?
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    Free falling body after certain height

    **Considering the rocket when it reaches the height of 525m. Because upward acceleration is constant: Vyf = Vyi + Ayt **However to find Vyf you need to know the time it takes to reach 525m. Yf = Yi + Vyi + 1/2Ayt2 [2(Yf)/Ay]1/2=t Vyf = Ayt Vyf= 48m/s **now to find the addition...
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    Centripetal forces and satellites

    ** r = radius r = RE + h = (6.4*10^6m + 300,000m) = 6.7x10^6 **C = Circumference C=2(PI)r T=period T=C/v **for circular motion there are 2 components of acceleration, radial acceleration and tangential acceleration. the radial (centripetal acceleration) is shown: Ar=(mv2)/r...
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    Solving Projectile Motion Equation from Physics 8e - Chapter 3 Page 70

    You don't need to use the quadratic equation. I offer a more pictorial method for this problem. There are two important times during the parabola trajectory, tA and tB. tA is when the object is at the peak of the parabola. tB is when the object lands. tB = 2tA **since acceleration...
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    Energy Test, need some extra revision

    What distance has the object traversed? Is this horizontal or vertical translation? The question does not seem complete. I started working on this but you would need to know how far the object has traveled to find the acceleration unless the object has undergone vertical free fall where you can...
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    Mastering Equation Balancing in Chemistry: A Universal Method for All Reactions

    Ok the only way you will learn to balance equations is to practice by doing problems. There is no silver bullet, there is no algorithm, you just have to practice over and over. If you can't balance equations, you won't get far in chemistry (I think you are aware of this). Look in your general...
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    2 questions (one ochem and one pchem)

    Its probably safe to assume ideal behavior unless otherwise indicated.
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    The carbon content of a good samari sword

    look up this material referred to as tamahagane, its raw material used to making katanas
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    Atoms Unite: Gas vs. Non-Gas Molecules

    Monoatomic species such as O or N are not stable and require filling their valence shells to achieve noble gas configuration. They fill these outer energy levels by forming bonds with elements that can afford to give up or share electrons. Its the same reason why you encounter sodium as a...
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    Volume Contraction (Water & Methanol Mixture)

    So what you are suggesting is that when you mix equivalent volumes of CH3OH and H20 you do not get 100mL of solution in your vessel? My thinking is that the -OH group on the methyl group is a electron withdrawing functional group and will shift the electron density toward the -OH region of the...
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    Mastering Equation Balancing in Chemistry: A Universal Method for All Reactions

    There is no one size fits all approach. You just need to do many problems to gain experience. Sometimes a bit of trial and error is involved. Try this out. Butane undergoes complete combustion to yield carbon dioxide and water: C4H10 + O2 => H20 + CO2 Can you balance this?
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    What formulas do I need and how do I work out the height?

    Hi Bobby. I'm new to the forums so I hope this response is Kosher. Ok so you have been given a speed for the orbiting satellite, let's call it Vsat. Ask your self the following two questions: 1. Is Vsat a constant value? (does the speed ever change?) 2. Is the path of the orbit circular in...
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    Engineering Should I go for engineering? 23 yrs old

    Farday is an inspiring figure!
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    Have I wasted my youth? (I need advice Please)

    Look, people don't just wake up and say "You know what?--I am going to derive an equation that shows that no heat engine has an efficiency that reaches unity!". Sadi Carnot derived such an equation in the early 1800s, but its not because he decided to do it on a whim. He just went about his...