Recent content by YellowPeril

Alright, I did come up with a scheme to arrive at an answer but I am not sure how much to read into it. I used the least squares theorem for a number of equations to arrive at an answer. i.e. X(LS) = (A(t)A)^-1A(t)B where B is the crusher weightometer readings per shift and A is the matrix...

Beaubello Maybe this previous thread can get you started https://www.physicsforums.com/showthread.php?t=278252

ygolo More information about the problem Matrix equation is [a] [t] = [c] where The matrix [a] is a11 a12 ...a1n a1n is the daily number of loads for truck 1 on day n . . . ...

My problem is this. I work on a mine, trucks have a average weight that they can carry (should be approx 180 tonnes) Every end of shift, the weightometer reading at the crusher is taken and the number of loads for each truck is stored in a database. Trucks have weightometers but I...

Thanks Fleem, Empirical measurements were what I had in mind. I just needed some background on the variables to see if it would be a worthwhile exercise. From what you have told me it could be worth the effort to make some crude measurements with the GPS while out on the water. Bearing in...

Hi From this post you will deduce that one of my hobbies is sailing, I believe that applying a bit of science to the situation will improve my ability to make better tactical decisions on the spot. I have a GPS but am interested in getting a quick visual of boat speed related to the angle...

Sorry DaveC426913, You were originally correct about the ears, the eustachian tube sits behind the ear drum to equalise pressure therefor making it a blind opening. Saw a diagram today which reminded me.

This is a picture of me in my bath. (dont worry, it is purely diagramatic!). I face a wall to the front of the bath. There is also a wall to the left hand side of me. Both with shiny tiles. Their is a light above me and slightly behind to my right. While relaxing, I took note of the light bulb...

I don't believe that one can make a distinction about the ears not being an opening, afterall if one considers that the body is comprised of tubes and boilers essentially at low pressure with valves all over the place then the eustacian tube should not be treated any differently from the valve...

Think about the following real world situations: A rubber bouncy ball bouncing on a floor follows an unpredictable path, this is because there is change in angular momentum due to friction with the floor. A tennis ball follows a more predictable path, except in extreme situations e.g. pro...

Thanks for the clarification (it helped me understand some of the more technical aspects that were put forward earlier) I did notice the time stamp of a year ago but as I was thinking about the same problem just recently, I decided to venture a comment anyway.

This is an interesting problem, intuitively I would imagine that one can draw a stair case with a blunt pencil, there is a limit where the thickness of the line would cause the staircase to look like a diagonal. This is the point at which definitions of length would be ambiguous because they are...