Tagged Questions
0
votes
0answers
28 views
Help me obtain the pressure equation for a gas in a spherical coordinates
Assume a sphere filled with $n$ gas particles moving freely.
if we draw a circle with an area of $dA$ on the inside wall of the sphere, how many particles with velocity $v$ and angles $\theta$ and ...
2
votes
2answers
373 views
Projection of a 3D spherical distribution function in to a 2D cartesian plane
Consider a 3D spherical Gaussian distribution function that depends on radius only,
$$f(r) = \frac{1}{N} e^{-(\frac{r-R_\mu}{\sigma})^2}$$
where $R_\mu$ is the radial offset of the distribution and ...
0
votes
1answer
50 views
Coordinates transformation and falling body trajectory
As it's well known, assuming the earth fixed and non rotating, the trajectory of a falling body with initial speed $v_0 = \{v_{0x},v_{0y},{v_{0z}}\}$ is contained in a plane. Assuming an observer in ...
2
votes
1answer
177 views
Equation for the sensitivity pattern of a bi-directional microphone?
Can anyone give me an equation that expresses the sensitivity pattern of a bi-directional microphone, as a function of azimuth and elevation angle? A bi-directional microphone pattern looks something ...
