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?

<p>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.</p> Signup and view all the answers

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

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

What is the First Law of Thermodynamics?

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

What is a control volume and how is it selected?

<p>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.</p> Signup and view all the answers

What is the conservation principle for mass and energy?

<p>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.</p> Signup and view all the answers

What is the boundary of a control volume called?

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

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

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

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