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

Amoving company collects data about couches they move and displays the data in a table. the force along the ramp, the angle of the ramp, and the height the couch is raised to are shown. which statements correctly compare the work done to move the couches? check all that apply. the same amount of work is done for couches 1 and 3. the same amount of work is done for couches 2 and 3. the work for couch 1 is greater than the work for couch 2. the work for couch 2 is less than the work for couch 3. the work for couch 3 is greater than the work for couch 1. the work for couch 2 is greater than the work for couch 1.

What happens when a rubber rod is rubbed with a piece of fur?

Robin is swinging back and forth from a trapeze. in which of the following situations is his kinetic energy being transformed into potential energy