Explanation:
Wien’s Law:

The law states that the wavelength at which black body emits maximum heat is inversely proportional to the temperature of the body in Kelvins.

1) Walls at 300 K


2) Ice water at 273 K :


3) Hot water at 373 K :


4)Skin at 310 K:


5)An incandescent light bulb at 3000 K


3.) People that share a common language, culture, or history are referred to as an ethnic group. The answer is B.
4.) There have been many issues in Canada where Quebec wants to become an independent country because of it being more French. The answer is C.
5.) The Canadian Sheild is not arable land. The land is very hard and has thin soil. The answer is A.