if on earth's surface the force of gravity of an oject is 800n how much force of gravity will the same object have at 12740 distance from the center of earth

Plss anybody know how to do this? ? i need the answers from a through d

The step-down transformer gives a current of 10a at 24v if the primary voltage is 240v calculate the 1_primary current 2_the power input 3_the power output

Asmall, positively charged ball is moved close to a large, positively charged ball. which describes how the small ball likely responds when it is released? it will move toward the large ball because like charges repel. it will move toward the large ball because like charges attract. it will move away from the large ball because like charges repel. it will move away from the large ball because like charges attract.