The answer is b) force exponerse by charge in electric field
Youhh pick upp electrons from the floor and become positively charged
The components of the ball's position 
at time 
are
The ball stops 18.0 m from where it began, so that
From the second equation, we can show that the ball travels for about 
seconds, which means it was initially thrown with a horizontal velocity of
Answer:
2×10^-4m^3/0.002m^3
Explanation:
first know the formula of getting density which is
density=mass/volume
substitute with values given in the problem
{before beginning convert all the values to SI units}
13600m/cm^3=2.27kg/x
calculate to solve for x=volume
