The leads from the pharynx towards the lungs

If an electric circuit is not grounded it is best to reach out and touch it to provide the ground a. true or b. false

Apotter's wheel moves uniformly from rest to an angular speed of 0.20 rev/s in 32.0 s. (a) find its angular acceleration in radians per second per second. rad/s2 (b) would doubling the angular acceleration during the given period have doubled final angular speed?

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