Answer:Density is the mass of an object divided by its volume. Density often has units of grams per cubic centimeter (g/cm3). ... You probably have an intuitive feeling for density in the materials you use often. For example, sponges are low in density; they have a low mass per unit volume.
Explanation:
Answer:
(A) Acceleration will be 
(b) Time taken will be 
(c) Force will be
Explanation:
We have given that electron starts from rest so initial velocity u = 0 m/sec
Final velocity 
Mass of electron 
Distance traveled by electron 
From third equation of motion we know that 
(a) So 

(b) From first equation of motion we know that v = u+at
So 

(c) From newton's law we know that force
