Answer:
well, during reflection
angle of incident is equal to angle of reflection so if angles of incident is 23° , then angle of reflection is also equal to 23° .
so the total angle between the reflected and incident ray will be equal to angle of incidence plus angle of reflection
i.e. angle i + angle r = 23° + 23° = 46°
hence the required angle is 46°
<em>i</em><em> </em><em>hope</em><em> </em><em>it</em><em> </em><em>helped</em><em> </em><em>.</em>
Answer: <u>To establish a point from which to measure a future distance, or if movement has occurred.</u>
Explanation:
A reference point is a point with respect to which one comes to know whether any movement has occurred or not. A still point is required. When the object changes distance from that point, it means that object has moved. The distance can be calculated from one point to another.
Therefore, A reference point is used to establish a point from which future distance or if movement has occurred is detected.
You can't get something from nothing is practically stating the law. The law means states that energy can't be created or destroyed, in other words, it's constant. So in saying so, you truly can't get something from nothing
The universe's estimated age is <span>13.772 billion years</span>
"orbiting the Sun in an elliptical orbit"
