A certain machine can output 50 joules when 100 joules of energy are input. If the amount of friction experienced by the machine is reduced, which of the following is most likely its output?
A. 0j
B. 25j
C. 50j
D. 75j

**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

If the new moon happens on january 15th, what shape will it be on february 6th?

Which lists the pairs of plates in order from least to greatest in terms of the work done to move the electron?