Ivan pushes a dresser with full drawers across his carpeted floor. What could Ivan do to reduce the amount of friction between t
2 answers:
You might be interested in
Answer:
The correct option is (d). "3x stronger".
Explanation:
The force between two charged particle is given by :
If one charge is tripled,
New force will be :
It means if one of the charges were to triple in strength, then the force will become 3 times of the initial force.
To solve this problem it is necessary to apply the concepts related to destructive interference.
The concept refers to an overlap of two or more waves of identical or similar frequency that, when interfering, creates a new pattern of waves of lower intensity
By definition destructive interference is given by
Where,
n=integer (1,2,3,4,5,6...etc)
t = thickness
M= Index of refrqaction
For minimum thickness to satisfy this condition n will be minimum there,
n=0
Therefore
Solving to find M,
Therefore the correct answer is B. 1.38