They interact with one another with their facial expressions and body movements all the time
A )voltage
(i.e differance in electricity field)
Vertical columns on the periodic table are called groups.
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Explanation:
The momentum of an object is given in terms of its mass and its velocity. The law of conservation of momentum says that the net momentum of a system remains conserved for an isolated system.
Momentum is given by :
p = m × v
If p is conserved, velocity is inversely proportional to the mass of an object. When mass changes, velocity also changes but inversely.
