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In the given scenario, if the force applied to the system is opposite to the direction of the displacement, then the work done on the system is negative.

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3mo ago

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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.


How can one determine the work done by friction in a given scenario?

To determine the work done by friction in a scenario, you can calculate the force of friction acting on an object and multiply it by the distance the object moves in the direction of the frictional force. This will give you the work done by friction in that scenario.


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 much work is done by the normal force in a given scenario?

The work done by the normal force in a scenario is zero, as the normal force is perpendicular to the direction of motion and does not contribute to the displacement of the object.


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.


Can work done be negative in a physical system?

Yes, work done can be negative in a physical system when the force applied is in the opposite direction of the displacement.


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.


What are the consequences of negative work done on a system?

The consequences of negative work done on a system can include a decrease in the system's energy, a decrease in the system's temperature, and a change in the system's state or properties. Negative work typically represents work done by the system on its surroundings, resulting in a loss of energy within the system. This can lead to a decrease in the system's overall performance or efficiency.


A sample of gas in a syringe releases heat go its surroundings while the plunger us pulled out what are the correct signs of heat and work in this change?

In this scenario, the gas is doing work on its surroundings, so the work is negative. Since heat is being released from the gas to its surroundings, the heat is also negative. The sign convention typically defines work done by the system as negative and heat released from the system as negative.


How can one effectively measure risk in a given scenario?

One can effectively measure risk in a given scenario by analyzing the likelihood of potential negative outcomes and the impact they may have. This can be done by conducting a thorough risk assessment, considering factors such as probability, severity, and potential consequences. Additionally, using tools such as risk matrices and risk registers can help quantify and prioritize risks for better decision-making.


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 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.