Final answer:
The normal force on a book resting on a stationary table with a weight of 9 N is also 9 N, in accordance with Newton's third law of motion.
Step-by-step explanation:
When a book is resting on a stationary table and the weight of the book is 9 N, the normal force exerted by the table on the book is also 9 N. This is due to Newton's third law of motion, which states that for every action, there is an equal and opposite reaction. Therefore, the normal force is equal in magnitude and opposite in direction to the weight of the book, as long as the book is not accelerating vertically.