Calculate the force a piano tuner applies to stretch a steel piano wire 8 mm, if the wire is originally 0.94 mm in diameter and 1.43 m long.

When many atoms are split in a chain reaction, a large explosion occurs. this is an example of what type of energy conservation

Although light from the sun appears white, it is actually made up of a lot of different colors. this portion of the electromagnetic spectrum, we call white light is referred to as within the electromagnetic spectrum.

**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