I think the answer is d. In the magnetotail. I hope this helps! :)
Shape of the nose is entirely hereditary, as genes have nothing to do with any of the other attributes.
They are speed and direction.
Answer:
The value is 
Explanation:
From the question we are told that
The magnitude of the horizontal force is 
The mass of the crate is 
The acceleration of the crate is 
Generally the net force acting on the crate is mathematically represented as

Here
is force of kinetic friction (in N) acting on the crate
So

=> 