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There are two conventions. One says that work done on the system is positive, the other says that work done by the system is positive. Chemists tend to use the former, physicists tend to use the latter... one of several reasons it's not a good idea to take thermodynamics in chemistry and physics at the same time.
What else can I help you with?
What force allows work to be done?
Any force can produce work if it causes displacement. If displacement is in opposite direction of force, work done will be negative and if displacement is in direction of force work done will be positive. If there is no displacement, work done is zero. Eg: Gravitational force pulls you down towards earth, in pulling you down it does work on you which gets stored in form of potential energy. Energy for A+
What is the first law of thermodynamics applied to closed and open system showing the meaning of the positive and negative sign of heat and work?
The first law of thermodynamics states that: "The internal energy of a system is a function of its state. Any increase in the internal energy of a system is equal to the sum of the heat supplied to the system and the work done on the system." In equations, this is stated as: DU = DQ + DW where DU is the INCREASE in internal energy DQ is the heat SUPPLIED DW is the work done ON the system So, if heat is lost by the system, it means that DQ is negative and if work is done by the system, it means that DW is negative. The best way to answer thermodynamics questions involving the first law is to think logically about what calculations should be made. If you do this, you will never make mistakes about signs.
When you burn a fuel what is released that allows work to be done?
Carbon Dioxide is release allowing work to be done.
Can you ever give something a positive charge by giving it protons?
You can give it a positive charge, but that is mainly done by rubbing something on the surface you'd like to be positive. The thing ( fur, hair, or other material that cause much frictions) will rub away electrons from the surface, causing it to become positive. In a lab you could technically add positive ions to make a material positive, but outside that it can hardly or not at all be done.
Why counter clockwise torque taken as positive?
In engineering, counterclockwise torque is often taken as positive due to the convention that rotation in this direction is generally associated with work being done or energy being input into a system. This convention simplifies calculations and provides a consistent reference point for analyzing torque effects.
Is the work done by the system is considered as positive or on the system is considered as positive?
Work done by the system is considered as PositiveWork done on the system is considered as Negative
How do you determine a work done is positive sign or negative sign?
If work is done on the system then it has a negative sign. If work is done by the system then it has a positive sign.
What is positive work done?
POSITIVE work is done when the direction of displacement and gravitational force is same. This makes an angle of zero degrees. Fd?FScos0 equals +1. The work done is positive.
When swimming work done is positive or negative?
Positive.
Is the work done on a system positive or negative?
The work done on a system is positive when energy is added to the system, and negative when energy is removed from the system.
When is positive work done in a physical system?
Positive work is done in a physical system when the force applied to an object is in the same direction as the displacement of the object.
When do you say that the work done is positive or negative?
There are different conventions as to what work is negative and what work is positive. The convention used by engineers and physicists is that work done BY the system on its surroundings is positive while work done ON the system by its surroundings is negative. Chemists reverse these conventions.
What is the work done by the system according to the sign convention?
The work done by the system is positive if the system does work on its surroundings, and negative if work is done on the system by the surroundings.
Work done on the system is?
work done on the system: when a surrounding does work on the system the total energy increases so work done is positive..........
What would happen to an object's velocity if positive work was done on an object?
If positive work is done on an object, its velocity will increase. This is because work done on an object transfers energy to the object, which can result in an increase in its kinetic energy and thus its velocity.
When the force acting on an objects points at least partially in the blank direction of the motion the work done is considered to be what?
When the force acting on an object points at least partially in the direction of motion, the work done is considered to be positive. This is because the force is helping to move the object in the same direction as its motion, resulting in a positive work output.
When is a thermodynamic work said to be positive?
A thermodynamic work is said to be positive when the system does work on the surroundings. This occurs when energy is transferred from the system to the surroundings, resulting in a decrease in the internal energy of the system.
