Chan Hee can expect to observe about the samples after 16 days is that three-fourths of each sample will have undergone radioactive decay. The best answer is letter B.
Answer:
The independent variable is the variable the experimenter manipulates or changes, and is assumed to have a direct effect on the dependent variable. ... The dependent variable is the variable being tested and measured in an experiment, and is 'dependent' on the independent variable.
Answer:
0.315758099469 m
Explanation:
m = Mass of cylinder = 1.5 kg
= Density of water = 1000 kg/m³
V = Volume = Ah
A = Area = 
k = Spring constant = 31 N/m
x = Displacement
g = Acceleration due to gravity = 9.81 m/s²
Here the forces are conserved
Weight of cylinder = Buoyant force + Spring force

The length of the submerged cylinder is 0.315758099469 m