In the space below, compare the vibrations involved in creating mechanical waves and electromagnetic waves. Use a ripple in a pond and a light wave traveling through water as examples when you write your answer.

Adelivery truck leaves a warehouse and travels 2.60 km north. the truck makes a left turn and travels 1.25 km west before making another right turn to travel 1.40 km north to arrive at its destination. what is the magnitude and direction of the truck's displacement from the warehouse?

Since the energy was not raising the temperature of the water during these segments, what was the energy used to do instead? your answer must include an explanation of what is happening to the molecules.

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