Which statement best describes why electrons are typically not included when determining the mass of an atom? the charge of a proton cancels the charge of an electron. the protons and neutrons are much more massive than the electrons. electrons have a negative charge. electrons are located outside the nucleus

The protons and neutrons are much more massive than the electrons.

The electrons are simply too small to really change the mass, so they aren't counted.

Julia would be observing a. static electricity was caused by her sweater rubbing against her shirt and transferring electrons. she didn't touch anything metal, so that would cancel out b.she most likely didn't rub her sweater against her hair either, so that cancels out c.she also didn't scoot across the carpet while trying to take her sweater off, that cancels out d.so that leaves a.a. is correct.