For silicon at T=500KT = 500 KT=500K, calculate the equilibrium hole concentration in cm−3cm^{-3}cm−3, if EC−EF=0.3eVE_C - E_F = 0.3 eVEC​−EF​=0.3eV. Values within 5% error will be considered correct

the total distance that martina travels that day is

(distance from home to mom's office) plus (distance from mom's office to school)

plus (distance from school to library) plus (distance from library to friend's house)

plus (distance from friend's house to martina's house).

(we don't know what any of these distance actually is.)