0.12 J/kg . K
Explanation:
Given parameters:
Mass of metal = 20g
Quantity of energy = 30J
Temperature = 12.5K
Unknown:
specific heat = ?
Solution:
The specific heat of a substance is the amount of heat required to raise the temperature of a 1g of the substance by 1K
It is given as:
C = 
input the parameters:
C = 
= 0.12 J/kg . K
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The correct answers are carbon dating. Carbon or radiocarbon dating is a method that uses a mathematical equation and the half-life of decay to determine the exact date of a fossil. Carbon dating is the method that has the determination of the age of an organic matter.
Answer:
A biotic factor is a living organism that shapes its environment. In a freshwater ecosystem, examples might include aquatic plants, fish, amphibians, and algae. Biotic and abiotic factors work together to create a unique ecosystem.
Explanation:
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Protein phosphates have the opposite effect as protein kinases. They dephosphorylate proteins. An example is the Protein phosphatase 1 that is significant to transcription regulation in the cell nucleus. If Protein phosphatases are not working, the cells would be unable to respond to environmental stimuli and would die.
Answer:
they are not affected by earth atmosphere
