What would be the angular diameter of the milky way as seen by an alien astronomer in the virgo cluster at a distance of 18 mpc? (note: the diameter of the mikly way is 30 kpc.)
a = arc minutes

Use the profile illustrated for problem (1). assume that the layer of silty sand fill (sm) is placed over the entire site. estimate the thickness of the fill (h - in feet) that will cause the effective vertical stress at the center of the clay layer to increase by 517.5 pounds per square foot.

What is the increase in density of a medium due to wave travel?

By what factor does the drag force on a car increase as it goes from 65 to 110 km/h?