Multiple choice: suppose the electric field is zero in a certain region of space. which of the following statements best describes the electric potential in this region?

a) the electric potential is zero everywhere in this region.
b) the electric potential is zero at at least one point in this region.
c) the electric potential is constant everywhere in this region.
d) there is not enough information given to distingush which of the above answers is correct.

firearm identification is the process of analyzing the bullets and cartridge cases left at a crime scene to determine if they came from a particular firearm. marks on the bullets and cartridges may be common to every firearm of that type. these are called class characteristics.

c because the news are a source of information of things that happen on the daily and shows evidence about that particular topic

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