Suppose that a piece of polystyrene insulation board has a thermal conductivity of k=0.04 W/m•k. If you want to make a wall of copper that provides the same insulation as a 4-cm polystyrene board, how thick does the copper wall have to be?

If the root word engage means “to connect with something,” what does the word disengage mean in the following sentence? he disengaged the gears by stepping on the clutch pedal.a.added more engine powerb.activated a connection to the pedalc.stalled the engined.released a connection to the pedal

Which substances have the lowest melting points: ionic covalent, or metallic

How much would the freezing point of water decrease if 4 mol of sugar were added to 1 kg of water(k=1.86 c/mol/kg for water and i=1 for sugar