Recent content by bobpeg123

To be honest I really don't know. I've become very confused with all the derivatives and general definitions.

Well I think they're k = 1/P and B = 1/T but I've been given equations for both in the question.

So do I integrate both in terms of dP?

A hypothetical substance has a compressibility k = a /V and a volume expansivity B = 2bT /V , where a and b are constants and V is the molar volume. Show that the equation of state is: V = bT2 - aP + constant To be honest I'm not entirely sure what I'm actually supposed to be doing with...

A grating having 600 lines per mm is illuminated with sodium light of mean wavelength 589.3 nm. Determine the maximum order of diffraction that can be observed. By differentiating the expression: d sin θ = m λ, calculate the angular separation in arc minutes in second order for the two...

Ok, so I tried again and I got, for v = 100m/s, D = 10N, using D = bv^2, b=10/100^2 = 0.001 and then using v(t) = {sqrt(mg/b)... expotential stuff, which gave me an answer of 23m/s after 3 secs, but I don't know if that seems reasonable because as the velocity drops, so does the drag so how...

But does that mean that the mass isn't important, or that gravity therefore doesn't matter?

Homework Statement A ball of mass 0.5 kg traveling horizontally through the air with speed v(t) experiences a drag force DT (t) whose magnitude is given by: DT (t ) = 0.01[v (t )] 2 The speed of the ball is found to reduce from 10 m/s to 8 m/s over a time interval t, during which time...