8. Electron travelling though two horizontal plates In the diagram P1 and P2 are two parallel horizontal plates that are 12.7 mm apart in a vacuum and have a potential
difference of 169 volts maintained between them, the upper plate being positive. Also, there is a horizontal magnetic field
of 0.033 T as shown.
X
De
x
x
X
P,
X
electron
beam X
P2 * * * * *
x x
X
x x
4111
x
X
X
x
x
A horizontal beam of electrons is directed between the plates so that it is moving at right angles to the magnetic field as
shown.
The magnitude of the electric field between the plates, to two significant figures, is:

okay i have so many questions. but the big one here is: um wt..f is this mess? ?

explanation:

considering the bohr theory, the type of connection that requires the transfer the answer conuldn't be right

the minimum constant speed at which she can catch the train is 2.7 m/s

given:

acceleration = 0.6

time = 4.5 s

to find:

velocity = ?

formula used:

from 1st kinematic equation we get,

v = u + at

u = initial speed of train = 0 m/s

v = final speed of the train

a = acceleration of the train

t = time

solution:

from 1st kinematic equation we get,

v = u + at

u = initial speed of train = 0 m/s

v = final speed of the train

a = acceleration of the train

t = time

v = 0 + (0.6 × 4.5)

v = 2.7 m/s

the minimum constant speed at which she can catch the train is 2.7 m/s

r = ρ x length / area  

ρ = r x area / length  

ρ is in ohm-meters  

in basic units, it is m³kg/s³a²  

i think this is it.