Pleaseee help it’s due in 20 minutes the 500 series bullet train travels between Tokyo and hakata, Japan. If it is heading north with a momentum of 13,194,098.64 kg m / s at a velocity of 261.8 KM/H what is its mass

**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

Aweight lifter raises a 1600 n barbell to a height of 2.0 meters. how much work was done? w = fd a) 30 joules b) 3000 joules c) 320 joules d) 3200 joules

Does heating a metal wire increase or decrease its electrical resistance? why?