Out of all given choices, “Different samples have different properties” is not a characteristic of a compound
Answer: Option A
<u>Explanation: </u>
A substance which comprises of more than one element chemically linked together at a fixed weight ratio usually referred as compound. The relationship arises due to the result of the chemical reactions between the components of the elements.
The property of the compound vary from the property of its elements to which it gets formed. For example: Water () is a combination of two elements, hydrogen and oxygen, chemically bonded in a constant 1: 8 weight ratio
.
Given :
A 120 kg box is on the verge of slipping down an inclined plane with an angle of inclination of 47º.
To Find :
The coefficient of static friction between the box and the plane.
Solution :
Vertical component of force :
Horizontal component of force(Normal reaction) :
Since, box is on the verge of slipping :
Therefore, the coefficient of static friction between the box and the plane is 1.07.
Hence, this is the required solution.