Which combination of a wire coil and a core would make the strongest electromagnet?

A. 200 coils of bare wire around a hollow cardboard core

B. 200 coils of insulated wire around a steel bolt

C. 50 coils of insulated wire around a hollow cardboard core

D. 50 coils of bare wire around a steel bolt

Agas contained within a piston-cylinder assembly undergoes three processes in series: process 12: compression with pv= constant from 1 bar and 1 liter to 4 bar. process 23: constant pressure expansion to 1 liter. process 31: constant volume calculate the pressure and volume at each state, and sketch the processes on a p-vdiagram labeled with pressure and volume values at each numbered stat

An ideal gas is held in a container at constant volume. initially, its temperature is 5 degrees c and its pressure is 1.2 atm. what is its pressure when its temperature is 43 degrees c? answer in units of atm

An object resting on a table weighs 100 n. with what force is the object pushing on the table? with what force is the table pushing on the object? explain how you got your answer.