A8 kg cat is running. 4 m/s. how much kinetic energy does it have

The discovery of the electron as a subatomic particle was a result of

Acoil suspended freely, points in some direction when no current is passed through it . can you tell what will happen when a current is passed though it?

Students in an introductory physics lab are performing an experiment with a parallel-plate capacitor made of two circular aluminum plates, each 11 cm in diameter, separated by 1.0 cm. how much charge can be added to each of the plates before a spark jumps between the two plates? for such flat electrodes, assume that value of 3×106n/c of the field causes a spark.