What components does the solar system appear to have formed from?

Naoki's bicycle has a mass of 10 kg. if naoki sits on her bicycle and starts pedaling with a force of 168 n, causing an acceleration of 2.8 m/s2, what is naoki's mass?

Which electron configuration represents the electrons in an atom of sodium in the ground state at stp

The equation picture below shows which type of nuclear reaction u 235 + n x e 134 + sr 100 + 2n