If the horizontal component of the resultant vector is -4.856 m/s and the vertical component is -9.365 m/s, what is the direction angle θ (the angle of rotation)?

What is the function of the commutator in a dc motor? a. to spin the magnet b. to change direct current into alternating current c. to change alternating current into direct current d. to spin the wire coil

How many molecules are present in 3 mols of silicon dioxide (sio2)?

**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