Student Exploration: Coulomb Force (static) ) PHYSICS Coulomb Force Exam Questions And Answers Verified 100% Correct

Student Exploration: Coulomb Force (static) ) PHYSICS Coulomb Force Exam Questions And Answers Verified 100% Correct Predict: How do you think the magnitude of the electrostatic force between two objects will change if the charge of each object was doubled? - ANSWER I predict the electrostatic force will increase by half. Measure: Turn on Show vector notation for both objects. Set the charge of objects A and B to 1.0 × 10-4 C. The force on object A is now -0.90i + 0j N. That means that the force is -0.90 N in the x direction and 0 N in the y direction. A. What is the magnitude of the force on object A? |FA| = - ANSWER 0.9 N B. What is the magnitude of the force on object B? |FB| = - ANSWER 0.9 N C. The force on object A is negative. What does this indicate about the direction of the force? - ANSWER The negative force indicates the force on A points to the left. Analyze: What patterns do you notice in the data? - ANSWER The force doubles when one charge is doubled. when both of the charges are doubled, the force is multiplied by four. Calculate: To calculate how much the force is multiplied, divide each force by the first value, 0.90 N. Fill in these values under Factor in the table. What do you notice? - ANSWER when one of the forces is doubled the factor doubles. Calculate: Calculate the product of the two charges, and fill in these values in the last column. Compare these numbers to the Factor numbers. What do you notice? - ANSWER the two objects multiplied together are proportional to the force factor. Apply: What would you expect the force to be if the charge of object A was 5.0 × 10-4 C and the charge of object B was 4.0 × 10-4 C? Check your answer with the Gizmo. - ANSWER 18 N Challenge: Based on what you have learned, write an equation for the strength of the electrostatic force for two charges that are separated by 10 meters. Use the Gizmo to check your equation. - ANSWER F= (0.9 x 108 )-qA - qB How do you think the sock and underwear became charged? - ANSWER While they were in the dryer some electrons were removed from some items and were transferred to other items. Suppose two socks acquire the same charge. Do you think they would stick together? Explain: - ANSWER They won't stick together because they both would have the same charge. Are the vectors for objects A and B pointing together or away from each other? - ANSWER away from each other Are objects A and B attracted together or repelled apart? - ANSWER they are repelled apart. Compare the lengths of the vectors. What do you notice? - ANSWER the length of both vectors are equal. Observe: You can change the charge of each object by entering the desired value in the qA and qB boxes. Observe the force vectors for each of the situations listed in the table below. Based on the force vectors, state whether the objects are repelled from one another, attracted to one another, or if there is no force at all. - ANSWER 1.0 × 10-4 C 1.0 × 10-4 C - ANSWER repulsion -1.0 × 10-4 C 1.0 × 10-4 C - ANSWER attraction -1.0 × 10-4 C -1.0 × 10-4 C - ANSWER repulsion 1.0 × 10-4 C 0.0 × 10-4 C - ANSWER no force When the charges are the same, the two objects _____________ one another. - ANSWER repel When the charges are opposite, the two objects _____________ one another. - ANSWER attract When one of the objects has no charge, the resulting force is - ANSWER