PLZZZ HELP I WILL DEFINITELY MARK U How much work does it take to carry a 30 kg holiday tree up a 15 m flight of stairs? If this takes 3 minutes, how much power is exerted?

**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