Answer:
Archaeology
Explanation:
Radioisotopes are radioactive atoms of an element in which their atoms contain excess energy making them unstable. When broken down they become more stable releasing radiations.
Carbon 14 is a radioactive isotope that is used in archaeology to study and estimate the lifespan and age of organic materials such as wood, leather. Carbon 14 can be used to estimate the ages of materials up to 50000 to 60000 years.
The answer of question 1 is:
C. The gravitational force becomes 16 times less.
The answer of question 2 is:
A. The gravitational force is 12 times larger.
The answer of question 3 is :
A. The new gravitational force is 9 times stronger than the old one.
The answer of question 4 is:
D. 8 times more.
Answer:
0.44807175m
Explanation:
k = Spring constant = 
(Assumed, as it is not given)
g = Acceleration due to gravity = 9.81 m/s²
Total mass is
The total weight will balance the spring force
The springs are compressed by 0.44807175m
