Lightning occurs when there is a flow of electrons between the ground and thethunder cloud. the maximum rate of flow (current) is about 20,000 c/s (amps), andit lasts for about 100 microseconds. how much charge flows between the groundand the cloud in this time? how many electrons flow during this time?

Which changes of state do the labels represent? a: b: c:

Aturntable a is built into a stage for use in a theatrical production. it is observed during a rehearsal that a trunk b starts to slide on the turntable 10 s after the turntable begins to rotate. knowing that the trunk undergoes a constant tangential acceleration of 0.31 m/s2, determine the coefficient of static friction between the trunk and the turntable.

Argon, neon, and xenon are examples of