Answer:
a. one-fourth its original value.
Explanation:
Sound is threated as a spherical wave. The intensity of the sound is inversely proportional to the area of the wavefront (). Therefore, it is inversely proportional to the square of the distance (r) to the sound source. So, if you double your distance, the intensity of the sound reduces to one-fourth its original value.
I would say Elastic Potential Energy is a form of Mechanical Energy, because there is an associated motion with it.
I would also say Gravitational Potential Energy is a form of Mechanical Energy.
Chemical potential energy is not a form of Mechanical Energy, it is actually a form of Chemical Energy. It is actually the energy contained in the chemical nature of a fluid.
Answer:
400N
Explanation:
If you have 2 forces (200N) and (200N) pushing an object the same direction in a one dimensional force vectors, the answer would be 400N