The e ~ k relationship for the bottom of the conduction band of a semiconductor is of the form e = ak2 where a = 5 x 10-37 jm"". determine the effective mass of the electrons in the conduction band for this semiconductor and express the answer as a fraction of the free electron mass.

The horse latitudes-high-pressure zones about 30 degrees north and 30 degrees south of the equator.-warm air traveling away from the equator cools and sinks-weather tends to be clear and drythe doldrums-low-pressure near equator-air rises and spreads out toward the poles-rising moist air produces clouds and heavy rainthe westerlies-blow from the west-move from the horse latitudes toward the poles.-bring storms across much of the united statesthe tradewinds-blow from the east-move from the horse latitudes toward the equator  -strong, steady winds