Answer:
A. It is always a positive force
Explanation:
Hooke's law describes the relation between an applied force and extension ability of an elastic material. The law states that provided the elastic limit, e, of a material is not exceeded, the force, F, applied is proportional to the extension, x, provided temperature is constant.
i.e F = - kx
where k is the constant of proportionality, and the minus sign implies that the force is a restoring force.
The applied force can either be compressing or stretching force.
Answer:
The value is 
Explanation:
From the question we are told
The pipe diameter at location 1 is 
The velocity at location 1 is 
The diameter at location 2 is 
Generally the area at location 1 is
=> 
=> 
=> 
Generally the area at location 1 is
=> 
=> 
Generally from continuity equation we have that
=> 
=>
=>
The generation of a magnetic field by an electric current is _electromagnetism_.
I know that protons and neutrons are located at the center of an atom, so the correct answer is D
The surrounding environment cool off is the answer
