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Atoms are generally stable if they meet a few conditions:
- Their valence electron shell is filled. This can occur by ionizing (gaining or losing electrons so that the highest-energy shell is full), or by electron sharing (via an electron 'sea' in metals, or by sharing of pairs of electrons in non-metals). Atoms with partially-full valence shells are chemically unstable, meaning that they react very readily with other elements.
- A nucleus with Too few neutrons will tend to capture its electrons or emit positrons (anti-electrons), neutralizing a proton and turning into a different element.
- A nucleus with Too many neutrons will tend to emit an electron by beta decay, turning one of its neutrons into a proton and turning into a different element.
- Additionally, once atoms reach a certain mass, there is no stable ratio of neutrons to protons, and the nucleus will either eject alpha particles from the nucleus until stable (alpha decay), or it will fission, breaking apart into two or more smaller nuclei.
- They have a certain ratio of protons and neutrons:
Atoms with unstable proton to neutron ratios are radioactive, meaning they will undergo some type of decay until they reach a form that is stable.
An object is in stable equilibrium when any disturbance or displacement from its equilibrium position causes a restoring force that brings it back to its original position. This means that the object will oscillate around its equilibrium position without moving away from it.
If it has 8 valance electrons (doesn't matter if it got them from another atom or is sharing with another atom).
When we say equilibrium, it is a state of balance. Meaning the summation of all forces in a system is equal to zero and the three states of equilibrium are; stable, unstable and neutral.
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An object is in stable equilibrium only when?
An object is in stable equilibrium when its center of gravity is directly above its base of support, and any disturbance causes it to return to its original position.
What happen to an object in stable equilibrium if you push or pull it a little bit?
In stable equilibrium, an object will experience a restoring force that moves it back to its original position when pushed or pulled slightly. The object will oscillate around its equilibrium point before eventually coming to rest again.
Are all objects at equilibrium stable?
No, not all objects at equilibrium are stable. There are two types of equilibrium: stable equilibrium, where a system returns to its original state when disturbed, and unstable equilibrium, where a system moves away from its original state when disturbed. Objects at unstable equilibrium are not stable.
When is an object in equilibrium?
When the forces acting on the object are stable
What will happen when to an object if the forces acting on it are balanced?
If the forces acting on an object are balanced, the object will remain at rest or continue to move at a constant velocity. This is in accordance with Newton's First Law of Motion, which states that an object in equilibrium will remain in equilibrium unless acted upon by an unbalanced force.
Is an object is stable what we can say about this object's force?
If an object is in static equilibrium (or "stable"), there is no net force acting on the object.
An object is in stable equilibrium only when?
An object is in stable equilibrium when its center of gravity is directly above its base of support, and any disturbance causes it to return to its original position.
What happen to an object in stable equilibrium if you push or pull it a little bit?
In stable equilibrium, an object will experience a restoring force that moves it back to its original position when pushed or pulled slightly. The object will oscillate around its equilibrium point before eventually coming to rest again.
When an object is balanced so that a displacement lowers its center of gravity is it in stable equilibrium?
False
Are all objects at equilibrium stable?
No, not all objects at equilibrium are stable. There are two types of equilibrium: stable equilibrium, where a system returns to its original state when disturbed, and unstable equilibrium, where a system moves away from its original state when disturbed. Objects at unstable equilibrium are not stable.
When is an object in equilibrium?
When the forces acting on the object are stable
What will happen when to an object if the forces acting on it are balanced?
If the forces acting on an object are balanced, the object will remain at rest or continue to move at a constant velocity. This is in accordance with Newton's First Law of Motion, which states that an object in equilibrium will remain in equilibrium unless acted upon by an unbalanced force.
How do we know wheater abody is in a stable or unstable equilbrium due to position of its centre of gravity?
If the center of gravity of an object falls below its support base, it is in stable equilibrium. If the center of gravity falls outside the support base, it is in unstable equilibrium. You can determine the stability by assessing the relationship between the object's center of gravity and its base of support.
What is the equilibrium criteria?
The equilibrium criteria summarize the conditions under which a system reaches a stable state with no net change. In physics, for example, equilibrium is achieved when the sum of all forces acting on an object is zero. In chemistry, equilibrium occurs when the rates of the forward and reverse reactions are equal.
What is a force that causes equilibrium?
A force that causes equilibrium is called an equilibrium force. This force acts in the opposite direction to an applied force to keep an object in a stable position without any net movement.
What are the five conditions to maintain equilibrium?
The net force acting on the object must be zero. The net torque acting on the object must be zero. The object must not be accelerating. The object must be in a stable position. The object must have no external disturbances acting on it.
Is an object in equilibrium moving?
An object in equilibrium is not moving, as all the forces acting on the object are balanced. If the object were to be in motion, it would no longer be in equilibrium as there would be an unbalanced force acting on it.
