A television produces two types of waves: light and sound. Which of the following statements describes a property of both light and sound?

A They can be reflected

B They require a medium.

C They are mechanical
waves.

D They travel at the same speed.

**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