Amatriel that resists the flow of electrons is called what?

Such a material possesses property referred to as electrical resistance. Resistance is measured in Ohms.  Elements developed with the purpose of causing a specific resistance in electrical circuits are called resistors.

The answer to your question could be "a resistor" but it could also be "an insulator" if they are asking about materials with a complete absence of conductivity (or, infinite resistance). Vaguely worded question.

it's a Resistor <<< not a insulator

Explanation:

1.Insulator is a material in which the electron does not flow freely or the atom of the insulator have tightly bound electrons whose internal electric charges do not flow freely; very little electric current will flow through it under the influence of an electric field. (so it's not insulator)

:)

2. Resistor is a passive two-terminal electrical component that implements electrical resistance as a circuit element. In electronic circuits, resistors are used to reduce current flow, adjust signal levels, to divide voltages, bias active elements, and terminate transmission lines, among other uses (it's resistor)

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.

  distance on the y-axis and time on the x-axis.

explanation:

the instantaneous velocity = change in position/time taken

the slope of the graph should give instantaneous velocity.

  slope of a graph = change in value of y -axis / change in values of x -axis

  comparing both the equations

    change in value of y -axis = change in position

  change in values of x -axis = time taken

so position values should be on the y axis and time values should be on the x axis.

distance on the y-axis and time on the x-axis.