I think it because of UV rays ultra violet ray which can make their colors different
Answer:

Explanation:
The force is defined as the negative of the derivative of the potential energy:

If we use the potential energy function given in this problem:

and we calculate the force, we get:

So, the force is

Answer:
The aim of Watson and Rayner was to condition a phobia in an emotionally stable child.
Explanation:
Does this help?
Answer:
There are Microwaves, the type of electro magnetic radiation is a Micro-wave. We use x-rays, the type of electro magnetic radiation is a gamma wave. We also use radios, the type of electro magnetic radiation is a radio wave.
Explanation:
I remember doing this assignment too
The effective acceleration or deceleration due to gravity depends on the inclined angle of the track relative to ground; the steeper the slope is the greater the effective acceleration.