Name two objects that have a low density.

-- a party balloon that's full of helium and resting on the ceiling

-- a piece of styrofoam

-- a cloud of smoke

-- a bag of hot air

-- a cirrus cloud in the sky

the answer is neither ball has a charge.

because if they were both positively charged, they will repel each other.

if they were positively and negatively charged, they will seek.

beta is electron from nucleus

something from nucleus has changed, but charge must be same for cons of charge