Answer:
Newton's first law
Explanation:
-An object will remain at or in uniform motion in a straight line unless acted upon by an external force.
-The acceleration of the box is equal to zero, so the net force on the box should be zero, so:
Answer:
The particles matter of some space between them. This space is very less in solids, more in liquids and very large in gases. It is called intermolecular space
B. Objects A and C possess charges of opposite sign.
<h3>
Attraction of two objects</h3>
The attraction of two objects occurs when the two objects have opposite charges.
<h3>
Repulsion of two objects</h3>
The repulsion of two objects occurs when the two objects have same charges.
Thus, we can conclude that, objects A and C possess charges of opposite sign.
Learn more about attraction of charges here: brainly.com/question/16033085
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Calorimetry :
<em><u>the process of measuring the amount of heat released or absorbed during a chemical reaction</u></em>.
Calorimeter :
<em><u>device for measuring the heat developed during a mechanical, electrical, or chemical reaction, and for calculating the heat capacity of materials</u></em>.