As a tile falls from the roof of a building to the ground its momentum is conserved.

Janelle made a hypothesis bout the uneven temperatures inside her house during winter. she believes that 50% of the ducts are blocked and she plans to investigate. if she wants to prove her hypothesis using scientific processes what should she do next?

Choose all the answers that apply. our solar system: is in a spiral galaxy no longer includes pluto is made mostly of empty space is in the andromeda galaxy is the only known system that supports life

Which compound is held together by the electrostatic force between two ions? a. co2 b. cci4 c. h2s d. mgf2