Two charges are located on the positive − of a coordinate system. Charge 1 = 2 × 10 -9 C is 2 from the origin, and charge 2 = 3 × 10 -9 4 from the origin. What is the magnitude of the total force exerted by these two charges on a charge 3 = 5 × 10-9 located at the origin?

Engineers find a new metal that is stronger than steel but much lighter. this material is also significantly cheaper than what is currently used for most aircraft, available in large quantities, and easy to manufacture. the engineers are excited because this new material will lower the costs of buying and operating airplanes for companies. what is probably the best step for the engineers to make next?