Using
a catho de ray tube, Thomson confirmed that
* atoms must have an overall positive charge.
Line
fa
atoms are made of particles that have a ne
ge.
2
KA
| o electrons in atoms must have varying amounts of energy.
o electrons are only found in the nucleus.
E
.

atoms must have an overall charge line

a and c

c is 100% but i am confused in a

it's when something is going so fast it makes a loud noise, breaking the sound barrier, for example: a jet makes a loud noise, not only cause of the jet but because they reached a point where they went so fast that you can year the noise from various parts, kinda like a police car, lets say the car was going   so fast that you hear the siren of the cop car right next to you, but the car is probably a mile a way, it's cos the siren was next to you a few seconds if you understand me