Sound waves cause molecules to vibrate and bump into one another. For sound to travel, there must be molecules which can be made to vibrate. The closer together the molecules are, the faster the sound is able to travel. This explains why answers:

A: sound travels faster in steel than in water.

B: sound travels faster in outer space than in air.

C: sound travels faster in air than in water.

D: sound travels faster in water than in steel.

3.) for each of the following compounds, draw the major organic product of reaction with hcl or naoh and circle whether the starting materials and products will be more soluble in organic solvent or water benzoic acid + hcl: benzoic acid + naoh: oh benzoic acid water/organic water organic fluorenone hс: fluorenone + naoh: fluorenone water/organic water/organic веnzocaine + hci: benzocaine + n»oh: h2n benzocaine water/organic water organic o=

Imagine that you push on a large rock. at what point does your effort change the rock’s mechanical energy?

Which of the following describes a situation where competition between producers exists