2) The temperature 30. K expressed in degrees Celsius is
A)
243°C
B)
-243°C
C)
303°C
D)
-303°C

B

Explanation:

From Celsius to Kelvin add 273

From Kelvin yo Celsius subtract 273

Hence 30 - 273 = -243

answer

fusion: the energy source of stars. the energy released from the collapse of the gas into a protostar causes the center of the protostar to become extremely hot. when the core is hot enough, nuclear fusion commences. fusion is the process where two hydrogen atoms combine to form a helium atom, releasing energy.

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