A direct current
this is a current that only flows in one direction
Geothermal energy provides force that causes magma to erupt to the surface
The answer is B.
Temperature is just another term for the average kinetic energy of a substance.
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

=> 