D. The direction of the force is toward the center of the object's circular path.
I'm not sure what your question is. But, the half life is the amount of time required for half the material to decay. For U238 this is 4.5 billion years, whilst for Fr-223 (Francium) its about 22 minutes. To calculate the time for something to decay you need to use the equation:
Mass (after time t) = Mass (initial) * (0.5)^(time/half life)
Hope this helps
Answer:
<h2>39.2 m</h2>
Explanation:
The height of the hill side can be found by using the formula
p is the potential energy
m is the mass
From the question we have
We have the final answer as
<h3>39.2 m</h3>
Hope this helps you
