Match the phrase with its explanation

**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

Properties seen when one one substance changes to another are known as properties

Acid precipitation chemically weathering a 5.0-kg limestone rock . which coukd be the result ?