Atmospheric electricity and storms,electric current in a vacuum,spark discharge,electrostatic control filters and industrial electrostatic separation <- those are just a few
Answer:
The objects kinetic energy increases as it falls from some height.
If he dropped them both at the same time, then as close as anyone could tell, they both hit the ground at the same time.
Answer:
Work function of the metal is 3.24 eV.
Explanation:
It is given that,
Wavelength, 
Let W is the work function of the metal. It is given by using Einstein's photoelectric effect equation. It is given by :



Since, 
So, W = 3.24 eV
So, the work function of the metal is 3.24 eV. Hence, this is the required solution.
The right answer is A. I'm one lever and two wedges
Hope this helps