A). If the half-life is 40 days, then 5 half-lives = (5 x 40) days.
b). If 5 half-lives have passed, then the radioactive portion of
the sample has been cut in half five times.
The amount that remains is (1/2)⁵ of the original amount.
That's (the original amount) x (1/2 · 1/2 · 1/2 · 1/2 · 1/2)
or
(the original amount) / 2⁵
or
(the original amount) / 32 .
That’s the acceleration law! This would be a good example of inertia! When in a car, if the brakes are pressed immediately, the passengers will launch forward since their bodies are still in motion!
Explanation:
may I ask what it is on because I might be able to help out
Answer:
A first-class lever: fulcrum is between input and output force; second-class lever: output force is between input force and fulcrum; third-class lever: input force is between fulcrum and output force
The kinetic energy should be 1,102.5 joules.