Plz help me out! Pe question

Determine the age of a fossil if it had only one eighth of its original carbon-14 content remaining?

**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

Convection occurs when thermal energy is transferred by the movement of