Answer:3000joules
Explanation: work=force×distance
Work=600×5
Work=3000joules
Explanation:
frequency =speed/wavelength
=5/0.5=10Hz
V=d*t
Since d=75km=75000m
t=1.5h=3600*1.5= 5400s
=>V=75000*5400
=405000000m/s=4.05*10^8m/s
Well first you can not go to the 2nd energy level without the first so the first takes up 2 electrons leaving you 5 electrons and the recommended amount is 8 electrons so you would have 5 electrons left
