E=dV=0.01200=20000mV
F=eE=(1.6⋅10−19)(20000)=3.2⋅10−15N From the conservation of energy:
a=mF=9.1⋅10−313.2⋅10−15=3.5⋅1015s2m
V2=v2+2ad=(106)2+2(3.5⋅1015)(0.01) The velocity of the electron upon striking the upper plate:
V=8.4⋅106sm The energy is conveyed to the upper plate is
E=eV=(1.6⋅10−19)(200)=3.2⋅10−17J The time of flight of the electron:
t=aV−v=3.5⋅10158.4⋅106−106=2.1⋅10−9s=2.1 ns
Comments
Leave a comment