Fertility is
a. the biological capacity to bear children.
c. the actual number of births occurring to women of childbearing age.
b. a drug treatment to women conceive.
d. a pull factor.

Which of the following statements correctly describes a transformer?

Is a volume of space that is empty of matter.

2) a cubical block of stone is lowered at a steady rate into the ocean by a crane, always keeping the top and bottom faces horizontal. which one of the following graphs best describes the buoyant force b on this block as a function of time t if the block just enters the water at time t = 0 s?