Recent content by pillanoid

Homework Statement Calculate the standard enthalpy change (##\Delta H##) at 25 degrees Celsius and 927 degrees Cesius for the reaction, WCl4(g) + CH4(g) = WC(s) + 4HCl(g) Data: WCl4(g): ##\Delta H298## = -336 kJ/mole; Cp (heat capacity at constant pressure) = 105.6 J/mol*K HCl(g): ##\Delta...

Homework Statement Determine whether the members of the given set of vectors are linearly independent for -\infty < t < \infty. If they are linearly dependent, find the linear relation among them. x(1)(t) = (e-t, 2e-t), x(2)(t) = (e-t, e-t), x(3)(t) = (3e-t, 0) (the vectors are written as...

all right, thanks!

Is that the particle model or what "actually" happens?

Oh, okay. So in the particle model of light, each photon will act as a particle, and the path it takes is determined by the wave equation (which I'm guessing involves some uncertainty principle or something like that?). The resulting diffraction (the concentric circle pattern) is due to the fact...

Homework Statement If the two slits in a two-slit interference experiment were so far apart that their diffraction patterns did not overlap, would the pattern displayed be consistent with a particle model of light? Homework Equations The Attempt at a Solution I said that it would not, since...

Ah, okay. So the total frictional force is equal to mv^2/R - 2m = -1.6m?

Homework Statement At a certain instant of time, a 1200 kg car traveling along a curve 250 m in radius is moving at a speed of 10 m/s but is slowing down at a rate of 2 m/s2. Ignoring air friction, what is the total static friction force on the car as a fraction of its weight at that instant...