Answer:
4589.05 year
Explanation:
The relation of activity is given by 
we have given 
Half life 
We know that half life 
So 
<span>The correct answer is A: True. Although the ability to forecast weather has increased over the years, the ability to predict when and how much wind will occur at any given time and place is difficult. Weather conditions are subject to constant change and while some areas are known to have more wind than others, there is no guarantee about how much wind there will be as weather patterns vary in consistency.</span>
4 n to the right is the net force
Near Earth's surface, gravitational acceleration is approximately 9.81 m/s2, which means that, ignoring the effects of air resistance, the speed of an object falling freely will increase by about 9.81 metres per second every second.
Answer:
1 mole of every substance has 6.022 × 10^23 particles. This is called Avagadro's constant
