How does the north pole of a magnet respond to the poles of other magnets?
a. it attracts both north and south poles.
b. it repels both north and south poles.
c. it attracts the north pole and repels the south pole.
d. it attracts the south pole and repels the north pole.

Which of the following represents an upside-down image?

Fill in the blank. the number of each type of element in the compound (other than 1) is represented by a small number to the right of the element symbol.

(a) assume the equation x = at^3 + bt describes the motion of a particular object, with x having the dimension of length and t having the dimension of time. determine the dimensions of the constants a and b. (use the following as necessary: l and t, where l is the unit of length and t is the unit of time.) (b) determine the dimensions of the derivative dx/dt = 3at^2 + b. (use the following as necessary: l and t, where l is the unit of length and t is the unit of time.)