Answer
Higher number = strong acids
Answer:
The law of reflection states that the angle of incidence = the angle of reflection.
Explanation:
Reflection is the phenomenon that occurs when a ray of light hits the boundary between two media and it is reflected back into the first medium.
In such a situation, we call:
- angle of incidence: it is the angle between the direction of the incident ray and the normal to the surface
- angle of reflection: it is the angle between the direction of the reflected ray and the normal to the surface
There is a precise relationship between the angle of incidence and the angle of reflection. In fact, the Law of Reflection states that:
- The incident ray, the reflected ray and the normal to the surface all lie within the same plane
- The angle of reflection is equal to the angle of incidence
The elastic potential energy stored in the spring is <u>0.017J</u>
When a spring is compressed, work is done against the restoring force which is set up in the spring. This work done is stored in the spring as its elastic potential energy.
The expression for elastic potential energy stored in a spring is given by,
Here, <em>k</em> is the spring constant and <em>x </em>is the compression in the spring.
Substitute 0.12 m for <em>x</em> ans 2.3 n?m for k.
Thus the spring stores 0.017 J as its elastic potential energy when compressed by 0.12 m.