What does soil structure refer to?
a. how the soil particles clump together
b. parent material
c. mineral content
d. amount of organic matter present.

Aray of light traveling parallel to the principal axis of a concave mirror will be reflected through the mirror's

Occurs when an energy source transfers heat directly to another subject space; an example would be an object becoming warm by sitting in the sunshine

Two steel balls, each of mass m, are welded to a light rod of length l and negligible mass and are initially at rest on a smooth horizontal surface. a horizontal force of magnitude f is suddenly applied to the rod as shown. determine (a) the instantaneous acceleration a of the mass center g and (b) the corresponding rate at which the angular velocity of the assembly about g is changing with time.