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What else can I help you with?
Is it more efficient to paint a heating radiator black or silver?
The efficiency of a radiator depends less on the type of paint on it as it does the type of metal it is made of. Allow me to use an analpgy of soda. Soda in an aluminum can will cool off in your fridge faster than it would in a glass or plastic bottle. However, aluminum will also be the fastest of the three to warm back up after it is removed from the fridge. This is all relatively basic calorimetery. The the specific heats of 2 metals will tell you which will heat up faster when there is superheated radiator water running through it and which will heat up slower but be emenating the heat into the room for longer. The color paint on the radiator makes a negligible difference.
What will be the equilibrium temperature when a 245g block of copper at 285C is placed in a 145g aluminum calorimetery cup with 825g of water at 12C?
To find the equilibrium temperature, we can use the principle of conservation of energy. The total heat lost by the copper block as it cools down should be equal to the total heat gained by the aluminum calorimeter cup and the water as they warm up. This can be calculated using the formula: mcΔT = mcΔT, where m is mass, c is specific heat capacity, and ΔT is the change in temperature. Once you solve this equation, you can find the equilibrium temperature at which heat transfer is balanced.
