Which of the following is the final step in a forecasting system? a. validate and implement the results. b.select the forecast model(s).c. make the forecast. d.gather the data needed to make the forecast.

What is the primary force that suspension bridges use cables to hold their spans up? a. tension force b. resistance force c. normal force d. elastic force e. applied force

Electric field of the earth. the earth has a net electric charge that causes a field at points near its surface equal to 150 n> c and directed in toward the center of the earth. (a) what magnitude and sign of charge would a 60-kg human have to acquire to overcome his or her weight by the force exerted by the earth’s electric field? (b) what would be the force of repulsion between two people each with the charge calculated in part (a) and separated by a distance of 100 m? is use of the earth’s electric field a feasible means of flight? why or why not?

Will mark as brainliest how does a catapult increase the trajectory of an object? ps. answer as if u were a 5th grader