Which is the best desciption of a molecule?

You are sitting on the beach and wondering about the properties of mechanical waves. describe them in terms of ocean waves.

Diamond will scratch quartz. true or false

**urgent** roberto plans to use two transformers to reduce a voltage of 120 v to 4 v. he uses a transformer that has 300 coils in the primary winding and 50 coils in the secondary winding. he has four other transformers, as listed in the table. which transformer should roberto use to have an ending voltage of 4 v? a- w b-xc- yd- z