Recent content by wavingerwin

Yes, something to that effect. Is it possible to say "A is smaller than B X% of the time" ?

Given two data sets A and B, we can, say, conduct ANOVA to see if the average is statistically different. Is there a way to determine what is the probabilty that A is smaller than B? Let's say that we can NOT assume anything about A and B e.g. if they follow a normal distribution.

Hi If the function ##f(x,y)## is independently continuous in ##x## and ##y##, i.e. f(x+d_x,y) = f(x,y) + \Delta_xd_x + O(d_x^2) and f(x,y+d_y) = f(x,y) + \Delta_yd_y + O(d_y^2) for some finite ##\Delta_x##, ##\Delta_y##, and small ##\delta_x##, ##\delta_x##, does it mean that it is continuous...

Homework Statement Solve for X in the DARE (Discrete-time Algebraic Riccati Equation) analytically. A is diagonal A = [-a\;0; 0 \;a], and B = [b; 0] (in MATLAB notation). Any help is very much appreciated! Homework Equations The DARE is given as A'XA - X - (A'PB+S)(B'XB+R)^{-1}(A'XB+S)' + Q =...

The LP I am concerned with has a number of inequalities. However, I need to only have at least one of them satisfied. This can be any combination of the inequalities, not a particular one. Say the LP has 5 inequalities to satisfy. I want to have that satisfying at least one of the 5 means...

Linear Programming - satisfaction of only at least one constraint Hi Is there a form of relaxation/modification of an LP of the form \text{min }\;\;f^\mathsf{T}x\\\mathbf{A}x\leq b such that if only anyone of the constraints is satisfied, then the solution ##x## is regarded as feasible...

Homework Statement Red and green laser (wavelength of 650 nm and 532 nm respectively) are directed towards each other at 20 degrees. Each laser has 5 mW power, with diameter of 1mm. Assuming the intensity of the beams are decreased by 10% each after the 'collision', estimate the upper...

Homework Statement Liquid ammonia at 1.5 MPa, 20oC is mixed with saturated vapor ammonia at 1.5 MPa at equal flow rate. At the outlet, 1.3 MPa and quality of 0.85. Calculate the heat transfer per kilogram of ammonia exiting the mixer. Homework Equations The Attempt at a Solution I tried...

Homework Statement On an arbitrary state, the observable \hat{A} is measured returning the result a. A compatible observable \hat{B} is then measured returning b. If \hat{A} is then measured again, is the same result a obtained? How about if \hat{A} and \hat{B} are not compatible...

I was wondering because they can't possibly bring 'normal' food for weeks/months of trip which need heaps of storage... or can they?

specific heat, c would equal du/dT so I guess the heat supplied, q, would equal change in u = c dT but c is not given in the question.

Hi ehild by applying heat and raising its temperature. However, I don't have/know an equation that equates total heating applied (Q) to the raise in temperature..

Homework Statement 2 moles of gas at 300 K at 0.02 m3 is expanded to twice the original volume at constant pressure, and then adiabatically until T = 300 K again. assume monatomic gas. assume ideal. determine the final volume determine the heat supplied to the overall process determine...

Homework Statement What happens when the tube is (a) overheated or (b) too cool. Homework Equations The Attempt at a Solution I searched on google and almost all said: " If the tube has been overheated, the emission current is small, and maxima and minima can hardly be recognized or...

A little background: I am doing the Franck-Hertz experiment and was asked to plot the spacing of acceleration voltage between peaks of output (anode) voltage. Homework Statement Plot/sketch the resulting spacings with the uncertainties on a number line! Homework Equations The...