When are magnets attracted and when are they repelled.

The velocity of a curling stone is due east. what will be the direction of the momentum of the curling stone as it moves?

How can one distinguish breccia from conglomerate? a. breccia contains angular clasts and conglomerate contains rounded clasts. b. breccia contains rounded clasts and conglomerate contains angular clasts. c. different minerals cement breccia than cement conglomerate. d. breccia contains sand and conglomerate contains silt.

The three classes of rocks are sedimentary, metamorphic, and igneous. how are rocks classified into one of these three groups?