Answer:
Explanation:19,2 or 0/4 or 5 or 40,4
Answer:
Isolated or Closed system, both are correct
For this case we have that by definition, the kinetic energy is given by the following formula:

Where:
m: It is the mass
v: It is the velocity
According to the data we have to:

Substituting the values we have:

finally, the kinetic energy is 
Answer:
Option A
Speed is equal to distance traveled divided by the time. So it's 3.5 m/s
The diagram is showing a 3d model of an atom, with all of the electrons demonstrated in a rounded shape, which resembles a cloud, thus being called an electron cloud.