Exercise 3 • A truck slows down from 40 m/s to 12 m/s during this time the truck covered a distance of 800m. What is the average acceleration of the truck?

• How long did it take the speed to decrease from 40m/s to 12m/s​

How are series and parallel circuits simililar? both have multiple paths for electrons to travel. both require resistors in their circuits. both require a switch to complete the circuit. both have at least one path for electrons to travel.

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?

Current from a charged capacitor lights a bulb. as time goes on the brightness of the