An unknown chemical molecule with a charge of +3.20 x
10-19 C drifts into the space between two parallel
plates as shown below.
The plates are separated by a space of 3.0 cm. The left plate
initially has a voltage of 0 V and the right plate is grounded (0
V).
Shortly after the molecule enters the gap between the plates,
the left plate has a voltage of +4000 V applied. The molecule is
accelerated by the electric field and leaves through a tiny hole in
the top plate and enters a region with zero electric field. The
molecule strikes a detector located 1.10 m from the top plate 300
μs after the voltage is applied to the left-hand plate.
NOTE: the 300 μs time of is NOT the time the molecule
takes to travel the 1.10 m
gap.
Calculate the mass of the chemical molecule, based on
the information provided here. Assume the initial
velocity of the molecule as it enters the electric field is 0
m/s.