Avoltage of 18 v is applied across the ends of a piece of copper wire 8 cm long. the mass of an electron is 9.11 x 10kg and its charge is 1.6 x 10-b c what is the magnitude of the electron's acceleration? answer in units of m/s part 2 of 2 points after traveling 4 × 10-8 m, if it does not collide with a copper ion over this distance what is the kinetic energy of the electron

Explanation:

It is given that,

Voltage, V = 18 V

Length of the copper wire, l = 8 cm = 0.08 m

Mass of electron,

Charge on electron,

Electric force is given by,

Also,

Since, the electron is at rest initially, u = 0

,

The kinetic energy of the electron is :

Hence, this is the required solution.

it has to be b, about 97 percent.

the chart show the masses and velocities of two colliding objects that stick together after a collision.

according to the law of conservation of momentum, the momentum of the object after the collision is  

answer

1,500

kg • m/s.