Which statement is always true: The total energy of a closed system... A) is always equally...
Which statement is always true: The total energy of a closed system...
A) is always equally divided between kinetic energy and potential energy
B) remains constant, assuming only conservative forces act on the system
C) is either all kinetic energy or all potential energy at any one instant
D) must be constantly changing
Homework Answers
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Which statement is always true: The total energy of a closed
system...
A) is always equally...
Select all of the following statements that are true about potential energy and conservative forces. Potential...
Select all of the following statements that are true about potential energy and conservative forces. Potential energy is the energy associated with the configuration of a system. It is only possible to have potential energy if there are 2 or more objects in the system that interact with each other through internal, conservative forces. Absolute values of potential energy have no meaning: only changes in the potential energy are physically meaningful. There is only one kind of potential energy: gravitational...
If the energy of the system is constant, and all forces are conservative, which statement is...
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which statement(s) is(are) TRUE for a proton moving in the direction of an electric field?...
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7. which of the following statements are true? a. kinetic energy must be a positive quantity...
7. which of the following statements are true? a. kinetic energy must be a positive quantity b. kinetic energy may be either a positive or negative quantity c. potential energy must be a positive quantity d. potential energy may be either a positive or negative quantity e. the potential energy of a system must be equal to its kinetic energy
True or false? 75. The forces in an isolated system must be conservative 76. The total...
True or false? 75. The forces in an isolated system must be conservative 76. The total mechanical energy of a system is not affected by friction forces. 77. An external force can change the total energy of a system that is not isolated. 87. The center of mass of an isolated system moves at a constant velocity as long as constant force is applied, Thank you!
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TRUE/FALSE (3 Points Each. Write the word "True" or "False", not the letter "T" or "F". I will construct 10 True/False questions by pulling ideas directly from the set of conceptual questions that can be found at the end of each chapter. What follows are some possible example questions: (1) If you are jogging at a constant velocity then you are not doing any mechanical work. The kinetic energy of a system must be either positive or zero. However, the...
Question 28 1 pts What is the gravitational potential energy of a 1- kg block at...
Question 28 1 pts What is the gravitational potential energy of a 1- kg block at rest on a table 1 m above the floor? 01 9.8 O 32 O 11.8) 00 Question 29 1 pts A particle is moved from point A to point B against a conservative force. Which statement is true about the work done? O cannot be recovered by moving it from B to A O does not depend on the path taken between A and...
True or False (Problems 1 through 10) 1. The change in entropy of a closed system...
True or False (Problems 1 through 10) 1. The change in entropy of a closed system is the same for every process between two specified states 2. The entropy of a fixed amount of an incompressible substance increases in every process for which temperature increases 3. A process that violates the second law of thermodynamics violates the first law of thermodynamics. 4. When a net amount of work is done on a closed system undergoing an internally reversible process, a...
1. Mark with T (True) or F (False) (2 points each) • A Joule Thompson experiment...
1. Mark with T (True) or F (False) (2 points each) • A Joule Thompson experiment corresponds to a process with constant enthalpy • The state functions (U.H.G.A) act as thermodynamic potentials when represented as functions of their natural variables. • The Gibbs free energy is equal to the maximum PV work done by the system on the envi ronment • The standard enthalpy of formation for any pure element in its reference state is temperature dependent • The phase...
Part B Check all the correct statements. Note: Push yourself to understand why these statements are...
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TRUE/FALSE (3 Points Each. Write the word "True" or "False", not the letter "T" or "F". I will construct 10 True/False questions by pulling ideas directly from the set of conceptual questions that can be found at the end of each chapter. What follows are some possible example questions: (1) If you are jogging at a constant velocity then you are not doing any mechanical work. The kinetic energy of a system must be either positive or zero. However, the...
Question 28 1 pts What is the gravitational potential energy of a 1- kg block at rest on a table 1 m above the floor? 01 9.8 O 32 O 11.8) 00 Question 29 1 pts A particle is moved from point A to point B against a conservative force. Which statement is true about the work done? O cannot be recovered by moving it from B to A O does not depend on the path taken between A and...
True or False (Problems 1 through 10) 1. The change in entropy of a closed system is the same for every process between two specified states 2. The entropy of a fixed amount of an incompressible substance increases in every process for which temperature increases 3. A process that violates the second law of thermodynamics violates the first law of thermodynamics. 4. When a net amount of work is done on a closed system undergoing an internally reversible process, a...
1. Mark with T (True) or F (False) (2 points each) • A Joule Thompson experiment corresponds to a process with constant enthalpy • The state functions (U.H.G.A) act as thermodynamic potentials when represented as functions of their natural variables. • The Gibbs free energy is equal to the maximum PV work done by the system on the envi ronment • The standard enthalpy of formation for any pure element in its reference state is temperature dependent • The phase...
Part B Check all the correct statements. Note: Push yourself to understand why these statements are true or false. If false think about an example that contradicts the statement, or think about how you would formulate the statement so it is correct. You will n you can answer a similar question that is formulated differently The internal energy of any gas (ie. not necessarily ideal) depends only the temperature of the system The kinetic energy of any gas (i.e. not...
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