The answer is E. Short and thick while cold.
Answer:14.14 cm
Explanation:
Given
Spring Compression 
Potential energy Stored in spring
Suppose k is the spring constant of spring
Potential Energy of spring is given by 




for 100 J energy





Well they could go down a hill to gain more kinetic energy.
The correct answer is B. 6 protons and 8 neutrons
Carbon-14 has same atomic number of 6. It has a nucleon number of 14
Atomic number = proton number = 6
Neutron number = nucleon number - atomic number = 14 - 6 = 8
Hope it helped!