How much force is needed to cause a 15 kilogram bicycle to accelerate at a rate of 10 meters per second per second?

Which statement describes both homogeneous mixtures and heterogeneous mixtures?

Rocks, as they are compressed, begin forming mountains above the earth's surface when two continental plates converge. the continental crust increases in depth as the mountains grow above. the himalayan mountains formed at a convergent plate boundary in this manner. the rocks are smashed together causing them to due to the intense heat and pressure from the colliding plates and eventually forming rock. a) melt; igneous b) layer; sedimentary c) recrystallize; metamorphic d) melt into the earth's interior; metamorphic

Classify this reaction: 2al+n2-> aln.