Recent content by /AH

  1. A

    Confused about answer key's solution to a work/energy problem

    Look at the direction of x, what does x mean in terms of the spring?
  2. A

    Computing integral using Monte Carlo method

    The integral of the function f(x) on range(-2 to 5) is the area enclosed by the the function and the x-axis, as you most likely are familiar with. A hint to the answer is in the final rule in the code: val = A * success / N; Your answer is a total area times the fraction of "succesfull" points...
  3. A

    Computing integral using Monte Carlo method

    Monte Carlo is about the probability that a random point (x,y) will lie within your desired area. So the desired area is a fraction of the total area in which you evaluate points. Do you have an idea what those two area's might be? And if so, how do you determine if a point is within your...
  4. A

    High School Acceleration due to gravity question

    Yes, the (gravitational) acceleration is still the same (but the object would see it as a deceleration) By setting up the energy balance of the system consisting of kinetic and potential energy, assuming a fully elastic bounce and no friction. E = \frac{1}{2} m v^2+m g h And using the...
  5. A

    Flying squirrel intercepting nut midair

    This is as far as I got for now: Using the same axis as stated: x and z as the horizontal axis and y as the vertical axis being positive going down. then: \Delta y = \mathrm{ndd} = \frac{1}{2} g t^2 = (t-\mathrm{ssd}) \mathrm{svy} \Delta x = \mathrm{nvx} \cdot t = (t-\mathrm{ssd})...
  6. A

    Is the current human species the result of artificial selection?

    Interesting thought. One view is that our shared technology helps a larger portion of us "survive", but it does not (have to) mean that individuals that are more adapted/involved with technology have a greater change of surviving or have more offspring. (A smarter person does not have a higher...
  7. A

    Natural convection and fins heat transfer problem

    The solution will be a combination of the heat transfer by the fins and the heat transfer through the alu. heatsink block. For the fins you can use the "infinite fin" law that you already stated: Θ/Θb = e^-nx With this you can define the heat transfer from the fins to the air, which is equal...