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If the chemical properties of a substance remain unchanged and appearance or shape of a substance changes it is called a ?

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.

Observations show that interstellar clouds can have almost any shape and