Maurice pulls on the end of a spring scale. He lets go of the end and observes the spring snap back into place. What force resto
2 answers:
Answer:
Elastic Force
Explanation:
As we pull the spring from one of its end by some distance such that its length is stretched by some amount "x"
So here the restoring force on the spring is given as
so here we know
k = coefficient of elasticity
x = change in the length of spring
So here the restoring force on the spring will be Elastic force which always act opposite to the direction of displacement of the spring
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The atom must lose 2 electrons
Explanation:
An atom consists of three types of particles:
- Protons, in the nucleus, with positive electric charge
- Neutrons, in the nucleus, with no electric charge
- Electrons, orbiting around the nucleus, with negative electric charge
As a result, the net electric charge of an atom is given by the number of protons minus the number of electrons:
Q = #p - #e
For a neutral atom, the number of protons and electrons is the same, so the net charge is zero.
In order for an atom to have a positive charge of +2, it means that there must be 2 protons more than the number of electrons. Since atoms exchange electrons (and not protons), this means that the atom must have "lost" 2 electrons.
In this problem, we have an atom with 13 protons: this means that initially it also has 13 electrons. However, later the atom lost 2 electrons, and as a result, the final charge is +2e.
Learn more about atoms:
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