Answer:
Covalent Bond
Explanation:
Covalent Bonds happen when elements in a compound share electrons to exist together in a stable state as in the diagram
I think it’s the first diagram
Answer:
x(t) = t^2 - 2 t + 1 given
v = dx / dt = 2 t - 2 = 0
t = 1
It comes to rest after 1 second
To solve this problem it is necessary to apply the concepts related to the energy released through the mass defect.
Mass defect can be understood as the difference between the mass of an isotope and its mass number, representing binding energy.
According to the information given we have that the reaction presented is as follows:

The values of the atomic masses would then be:
Th = 232.037146 u
Ra = 228.028731 u
He = 4.0026
The mass difference of the reaction would then be represented as


From the international measurement system we know that 1 atomic mass unit is equivalent to 931.5 MeV,


Therefore the energy is 5.414MeV