please answer my question its very urgent
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2. This incident , the flag will flutter in the direction of sea when it is midnight because at night time the sea becomes more hot than land and the air above sea traps heat and rises up due to which pressure difference is created and the cool air above land reaches the sea in order to maintain balance , so the flag will flutter in the direction of sea at midnight time and this phenomena is also called land breeze.
Answer:
1) When an iron nail immersed in the solution of copper sulphate than iron displaces copper from the solution of copper sulphate because iron is more reactive than copper. Therefore copper sulphate solution colour changes from blue to pale green.
2) in the image
3) Place butter on the spoons. Cut three slices of butter. ... You'll notice that the butter on the metal spoon has melted significantly, the butter on the wooden spoon has melted a little bit, and the butter on the plastic spoon has barely melted at all. [4] This is heat conduction at work.
