What state of matter takes the shape and volume of its container, like the steam coming from a pot a) gas b) liquid eliminate c) plasma d) solid

Air is to be preheated by hot exhaust gases in a cross-flow heat exchanger before it enters the furnace. air enters the heat exchanger at 95 kpa and 20°c at a rate of 0.6 m^3/s. the combustion gases (cp = 1.10 kj/kg°c) enter at 160°c at a rate of 0.95 kg/s and leave at 95°c. determine the rate of heat transfer to the air and its outlet temperature.

What is the power rating of the lightbulb if 3.0 a flow through it when connected to a 15 v battery

What are the north and south poles of a solenoid change with?