Which of the following is not a simple machine? a. wedge b. screw c. lever d. fulcrum

Alightning strike consists of charge moving from a cloud to the ground . in one particular case, the electrons in a lightning strike are confined to travel within a radius of 1.5 m and to move at a speed of 5.0 x 10 m/s. if the density of electrons in the strike is 10'15 electrons/m what current is carried by the lightning ?

What is the final velocity of the initial velocity of 25 and -50?

One form of energy can be another type of energy. a. created to form b. transformed into c. destroyed and then created to form