56. the masses and radii of the earth and moon are m,, r and m2, r2 respectively. their centres are at distance d apart. the minimum velocity with which a particle of mass m should be projected from a point midway between their centres so that it escapes to infinity is: (a) 2d (m, + m2) (b) 2 d cmt gm (m, +m2) (r, +r2) (d) 2, g (m +m,) 62. (e) 2, m,+m2)

Give the orbital configuration of the phosphorus (p) atom.

Astudent is trying to create a table that compares hypotheses, theories, and laws. hypothesis theory law do scientific researchers formulate it? yes yes yes does it explain why things happen? yes yes no yes yes yes is it used to make predictions? no yes yes which of the following questions would most likely fill the blank in the table? is it an intelligent guess? is it newly formulated? is it based on observations? has it been proved?

Count the number of each type of atom in the equation below, and then balance the equation. write in the numbers of atoms and coefficients. add a 1 if there should be no coefficient. cs2(l) + o2(g) → co2(g) + so2(g) c [ ] s [ ] o > c [ ] s [ ] o [ ] cs2(l) + [ ] o2(g) > [ ] co2(g) + [ ] so2(g)