1. When a doublet is added to a uniform stream so that the source part of the doublet faces the stream, a cylinder flow results. Plot the streamlines when the doublet is reversed so that the sink...

1. When a doublet is added to a uniform stream so that the source part of the doublet faces the stream, a cylinder flow results. Plot the streamlines when the doublet is reversed so that the sink faces the stream.

2. The functional frequency n of a stretched string is a function of the string length L, its diameter D, the mass density
, and the applied tensile force T. Suggest a set of dimensionless parameters relating these variables.