Final answer:
The normal force between the tabletop and the coffee mug can be calculated using the equation: N = mg + f, where N is the normal force, m is the mass of the coffee mug, g is the acceleration due to gravity, and f is the force of static friction.
Step-by-step explanation:
The normal force between the tabletop and the coffee mug can be calculated by using the equation: N = mg + f, where N is the normal force, m is the mass of the coffee mug, g is the acceleration due to gravity, and f is the force of static friction. In this case, the force of static friction is given as 1.4 N and the coefficient of friction is 0.19. Assuming the coffee mug is at rest and there is no vertical acceleration, the normal force can be calculated as:
N = (m)(g) + f = (m)(9.8 m/s^2) + 1.4 N
Therefore, the normal force between the tabletop and the coffee mug is 1.4 N plus the weight of the coffee mug.