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Recent Answers

2014-08-22 Entomology (Study of Bugs) - Vacant bird houses:

Michael,    The nest-building social wasps (Vespulidae) will use empty bird houses for nesting sites. In fact this can be very hazardous for both the birds and for people that work with the houses. You

2014-08-21 Astrophysics - Temperature of the cosmic radiation:

It was posted under my most recent answer.  It was asked under a different name, but with the exact same phrasing and typographical errors.  Are you two different people who asked the exact same question?

2014-08-21 Entomology (Study of Bugs) - bugs killing branches on red twig dogwood:

The picture is a little blurry, but this might be a sharpshooter leafhopper.  They suck sap from woody plants.  Treatments include systemics like Bayer Tree and Shrub insect control or topical sprays approved

2014-08-21 Physics - Air pressure:

The pressure inside and outside a sealed chamber can be different, yes.  They can also be the same, it depends on the pressure of air inside the chamber when it was sealed.    Air is far more compressible

2014-08-21 Civil Engineering - modeling foundation in etabs:

Dear mohammad    The very consideration is the stiffness of the springs which is related to the nature ( Subgrade modulus of the soil) . I suggest you to perform a sensitivity study on influence of variation


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