A mixture IS NOT a chemical combining of substances. If substances
combine chemically, then they form a compound, not a mixture.
The work done by the gravitational force = 0
Given the mass of the box = 40 kg
The box is initially at rest.
Distance moved by the applied force = 5m
Force applied = 130 N
Co-efficient of friction between the box and floor = 0.3
The box is moved only in the horizontal direction by the applied force.
Gravitational force is applied in a direction perpendicular to the applied force. hence it doesn't do any work on the box.
Therefore, the work done by the gravitational force is zero.
Learn more about the gravitational force at brainly.com/question/862529
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Well,
We know that microwaves and infrared waves (C and D) have longer wavelengths than visible light.
We know that UV light will give you a sunburn if you get too much of it.
Therefore, UV light has more energy, and thus a shorter wavelength than visible light.
Option B is the correct answer.