Answer:
74747463476869+7t87589598
Explanation:
thats your answer

We know that force equals mass times acceleration, so substitute in the known values and solve.

I have no explanation, but saw this pop up on a test paper and the answe was 10lb
Answer: The answer is that they rely on shock waves that are created by earthquakes and explosions,and that is how they find out the structure of the interior of the planet. :)