"A Nichrome heater dissipates 500 W when the appliedpotential difference is 110 V and the wire temperature is 800 C. What would be the dissipation rate if the wire temperature wereheld at 200 C by immersing the wire in a bath of cooling oil? Theapplied potential difference remains the same, and afor Nichromeat 800 C is 4.0104K1"

vapour or gas assuming atmospheriv pressure

c) up

hope this

answer: the metamorphic rocks are formed when they are exposed to high pressure and high temperatures. this happens when one of the earth's plates comes in contact with the other plate by traveling in opposite directions, straight into each other or slipping under one another. the friction that is caused by this activity results in   melting of rocks and when it cools they are known as metamorphic rocks. this process needs a controlled amount of pressure and temperature otherwise it may turn into magma.