Answer:
A
Explanation:
hail will fall push it back up making it bigger comes back down
After 3 half life periods you would have 5 grams of krypton left because half of 40 is 20 half of 20 is 10 and half of 10 is 5
Answer:
<h3>The answer is 3000 N</h3>
Explanation:
The amount of force can be found by using the formula

w is the workdone
d is the distance
From the question we have

We have the final answer as
<h3>3000 N</h3>
Hope this helps you