A sample of liquid nitrogen has a temperature of –320.8 ºF. What is its temperature in degrees Celsius and in kelvins? Show your work. (Hint: Use the temperature in degrees Celsius to calculate the temperature in kelvins.)

Answer(a)   the matererials that are in contact, the two materials and the nature of their surfaces/// (b)/// the force pushing the two surfaces together, pushing the surfaces together causes the more of the asperities to come together and increases the surface area in contact with each other

Gotta have a picture ^^

Aand b antarctica is a north pole.  field lines enter earth near the north pole.the magnetic pole near antarctica is a north pole.compasses point toward a magnetic pole that is a north pole.field lines circle earth from east to west.a compass can lead a hiker to the geographic north pole.

120v is the answer i am positive tell me if this was correct