Author Question: The magnitudes of two horizontal displacements are 4 m and 9 m, respectively. Given that the vectors ... (Read 85 times)

OSWALD · **on:** Jul 28, 2018

The magnitudes of two horizontal displacements are 4 m and 9 m, respectively. Given that the vectors may be in either the plus or the minus direction, they cannot be added together to give a total displacement of
a. 13 m.
b. 5 m.
c. 5 m.
d. 13 m.
e. 4 m.

Question 2

A chemical reaction is at equilibrium when
a. no reactants are changing to products.
b. the forward and reverse reactions proceed at the same rate.
c. the total mass has become constant.
d. the temperature is no longer changing.