As Shown in the Figure,three Force Vectors Act on an Object.The

question 110

Multiple Choice

As shown in the figure,three force vectors act on an object.The magnitudes of the forces as shown in the figure are F₁ = 80.0 N,F₂ = 60.0 N,and F₃ = 40.0 N,where N is the standard SI unit of force.The resultant force acting on the object is given by

• A) 180 N at an angle 60.0° with respect to +x-axis.
• B) 60.0 N at an angle 90.0° with respect to +x-axis.
• C) 20.0 N at an angle 34.3° with respect to +x-axis.
• D) 35.5 N at an angle 34.3° with respect to +x-axis.
• E) 40.0 N at an angle 60.0° with respect to +x-axis.

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Definitions:

Hydrogen-bonded Dimers

Pairs of molecules that are connected by hydrogen bonds, often observed in carboxylic acids and alcohols.

Molecular Weights

The sum of the atomic weights of all atoms in a molecule, representing the mass of a molecule relative to the unified atomic mass unit.

Carboxylic Acids

Organic acids characterized by the presence of at least one carboxyl group (-COOH), widely occurring in nature and used in various industrial applications.

Aldehydes

Organic compounds characterized by the presence of a carbonyl group attached to at least one hydrogen atom, used in a wide range of chemical synthesis processes.