First Law of Thermodynamics in Control Volumes Quiz

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Questions and Answers

What is a control volume in the context of the First Law of Thermodynamics?

A control volume is an arbitrary region in space selected to apply the conservation of energy to systems that involve mass flow across their boundaries.

What is the boundary of a control volume called?

The boundary of a control volume is called a control surface.

According to Einstein's formula E = mc^2, what is the relationship between mass and energy?

Mass and energy can be converted to each other according to the formula E = mc^2, where c is the speed of light.

What is the rate form expression for the conservation of mass for a control volume undergoing a process?

The rate form expression for the conservation of mass for a control volume undergoing a process is given by the equation ∑m_i - ∑m_e = dm_CV/dt. Signup and view all the answers

What is the term for the amount of mass flowing through a cross section per unit time?

The amount of mass flowing through a cross section per unit time is called the mass flow rate and is denoted by m°. Signup and view all the answers

What is the First Law of Thermodynamics?

The conservation of energy to systems that involve mass flow across their boundaries, control volumes. Signup and view all the answers

What is a control volume and how is it selected?

A control volume is an arbitrary region in space selected for the application of the conservation of energy. There are no concrete rules for the selection of control volumes. Signup and view all the answers

What is the conservation principle for mass and energy?

Mass and energy are conserved properties, and cannot be created or destroyed. Mass and energy can be converted to each other according to Einstein’s formula: E = mc2. Signup and view all the answers

What is the boundary of a control volume called?

The boundary of a control volume is called a control surface. Signup and view all the answers

What is the rate form expression for the conservation of mass for a control volume undergoing a process?

The rate form expression for the conservation of mass for a control volume undergoing a process is: ∑m_i - ∑m_e = dm_CV / dt. Signup and view all the answers