What’s the degeneracy of electron states in graphene and how does this affect the density of states?
if the density of states of a spinless particle in k-space is
dn=a dk 2π
show the total energy of conducting electrons at zero temperature in graphene is
e=
where epsilonf is the fermi energy and vf the fermi speed

Jessie ran 5000 meters from the cops and an average speed of 6 meters / second before he got caught . how long did he run?

Air initially at 0.75 bar, 1000 k, and occupying a volume of 0.12 m^3 undergoes two processes. process 1-2: the air is compressed isothermally until the volume is halved. process 2-3: the air undergoes a constant pressure process until the volume is halved again. assume ideal gas behavior. a) determine the mass of the air, in kg. b) the work and the heat transfer for each of the two processes, in kj. (100 kj = 1 bar . m^3)

Which bonds are found inside a water molecule