Recent content by mgnymph

  1. M

    Solving the F16 Jet Fighter Turning Circle Puzzle

    Question 1. Homework Statement The question shows a circle labeled as follows -A at the uppermost point -B at the most-right point -C at the lowest point -D at the most-left point so, the length along the circle from A to B (and B to C, C to D, D to A) is one quarter of the...
  2. M

    Question on functions and trigonometry.

    oh! Thanks for opening my eyes :D
  3. M

    Question on functions and trigonometry.

    Sorry, for overloading you guys, but I just can't get my head around these! Question 1 Homework Statement Show that, when restricted to the domain [-1,1], g has an inverse function. Use a definition of a theorem, a graph will not be accepted. Homework Equations g(x) = x/(x^2 + 1)...
  4. M

    Help with finding least upper bounds and greatest lower bounds?

    Homework Statement Solve the following inequalities and express the solution(s) in interval notation and set builder notation. For each of these, state the least upper bound and greatest lower bounds, if these exist. Homework Equations i) x^3 + x^2 > 2x ii) l 2 - x l =< 4...
  5. M

    What kind of oustanding achievements of abilities etc do

    Ivy League universities or other top institutions look for in a potential candidate?
  6. M

    Can I Pursue Multiple Majors in University?

    Hmm... Is it possible to do Medicine + Physics double major (I mean, is it difficult) Also, how realistic is it for someone to work as a doctor in a hospital, and at the same time, continue to go to university and study what they want (in my case, I think astrophysics + mathematics). I mean, I...
  7. M

    Can I Pursue Multiple Majors in University?

    Do you guys think it would be possible for me to just do medicine, and after becoming a doctor, go back to uni and do phys + math while working? Because I can live without chem >_> Sure, I'd be busy but I would love to be able to support myself and do math and phys
  8. M

    Can I Pursue Multiple Majors in University?

    By the way, people like this make me want to achieve the best in every field... Even if I do end up a distinguished doctor or surgeon or whatever, there will be always people like this that go 'oh I'm better than you because physics is "harder" and I just didn't read the textbook hurr durr' <_<
  9. M

    Help with Pre-Calculus Vector Questions from a 16 Year Old in NZ

    Yea that's why I did the a^2 = b^2 + c^2 rule thing because the lines were at right angles to each other, so I got a right angled triangle...
  10. M

    Can I Pursue Multiple Majors in University?

    Ok thanks for advice guys, but there's still 15 months before I finish high school so... maybe I'll make up my mind by then? :D Also at the poster asking if I lived in UK... no I live in New Zealand, I did IGCSEs last year and I'm doing AS for everything except maths, which was a year ahead.
  11. M

    Can I Pursue Multiple Majors in University?

    Well, first off, the subjects I take at school are Mathematics Biology Chemistry Physics English Literature I hate english, I only take it because I don't want to do anything else. Maths + 3 sciences are the only thing that interest me. Oh and also, I am very, very competitive, I...
  12. M

    Help with Pre-Calculus Vector Questions from a 16 Year Old in NZ

    I don't know what pre-calculus is, I live in New Zealand and I'm 16 if that helps... I apologize in advance if this is the wrong area! Homework Statement Find the distance of A (1,0,0) from the line r = t(12i - 3j -4k). Homework Equations a.b = lal.lbl.cos(theta) The Attempt at...
  13. M

    How to Calculate Enthalpy Change for a Zinc and Copper Sulfate Reaction?

    Homework Statement Zn(solid) + Cu2+(aq) -> Cu(solid) + Zn2+(aqueous) 5.96grams on zinc was added to 25cm^3 of 1M copper(II)sulphate solution in a polystyrene cup. Over 6 and a half minutes, the temperature of the solution decreased from 68 degrees Celsius to 19.5 degrees C. 1. Calculate...
  14. M

    Calculate Speed of Electron Using Power Supply & Charge Info

    Say you have a cathode ray gun and it is connected to a 10kV power supply, which is also connected to negatively charged parallel plates. Can you calculate the speed of the electron(s) which go from the heated coil to the plates, and only information given is voltage of power supply, charge of...
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