Energy remains constant is the answer you are looking for but it only applies, when no outside forces act on the object.
Explanation:
Q7Answer=If light meets a rough surface, each ray obeys the law of reflection. However, the different parts of the rough surface point in different directions, so the light is not all reflected in one direction. Instead, the light is reflected in all directions. This is called diffuse scattering .
Answer:
1. 1, 2, 4 all show some form of refraction as the bending of a light ray when passing from one media to another.
Explanation:
Number 4 is the most accurate as it also shows some light being reflected and the bending of the refracted light ray in the correct direction for going from a medium of low refractive index (air) into a higher refractive index material (crown glass)
Answer:
Tension in each cable = 175 N
Explanation:
Given:
Number of cables = 2
Weight of sign board(T) = 350 N
Find:
Tension in each cable
Computation:
We know that,
T1 = T2
So,
T1 + T2 = T
T1 + T2 = 350
T1 + T1 = 350
T1 = 175
Tension in each cable = 175 N