Final answer:
The specific question regarding the resultant force cannot be answered due to insufficient information. However, related problems involve applying Newton's Second Law and Coulomb's Law to calculate forces between charges and the effect of forces on motion.
Step-by-step explanation:
The student's question pertains to the calculation of the resultant force on an “object due to two forces.” Because the original question lacks specific details regarding the direction and magnitude of the other force acting on the object in question, it is not possible to answer the question with the information currently provided.
For the example problems listed, the calculations typically involve understanding Newton's Second Law of Motion and Coulomb's Law. For instance, question 12 relates to Coulomb’s Law, which states that the force between two charges is proportional to the product of the magnitudes of the charges and inversely proportional to the square of the distance between them. The correct answer to question 12 from the provided reference is 'a. 0.22 N', as the force will become 1/9th of its original value when the distance is tripled, according to Coulomb's Law.