With the aid of a string, a gyroscope is accelerated from rest to 32 rad/s in 0.40 s. (a) what is its angular acceleration in rad/s2? (b) how many revolutions does it go through in the process

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.