Answer:Dalton just expanded on the Greek idea of the atom.
Explanation:
Sound waves the force of said sound wave would knock you backwards
Answer:
2.5 mm
Explanation:
It's just big enough for red and blue to fall through but small enough that yellow will stay in
The old electricity meters with disk using sapphire bearings for friction to be minimal to not aggravate metering
Answer:
92 protons
Explanation:
The mass number is
238
, so the nucleus has <u>238 particles</u> in total, including <u>146 neutrons</u>. So to calculate the number of neutrons we have to subtract: 238 − 146 = 92
