question 1 Which of the following provides evidence that the thermal energy of a
ID: 1573369 • Letter: Q
Question
question 1
Which of the following provides evidence that the thermal energy of an object is decreasing?
A. its speed is incresing
b. its speed is decreasing
c. its temperature is increasing
d. its temperature is decreasing
question 2
A chair is pushed across the floor, and then let go. The chair comes to a very quick stop. A previous student wrote an explanation narrative for why the chair slows down after being let go. Read her evaluation, and then evaluate it for accuracy.
(1) There is a contact push/pull interaction between the chair and floor. (2) During the interaction, energy is transferred from the chair to the floor. (3) The kinetic energy of the chair decreases while its thermal energy increases, as well as the thermal energy of the floor. (4) Because the thermal energy of the chair increases, it slows down. This explanation is
Accurate as written.
Not accurate because sentence #1 is not correct.
Not accurate because sentence #2 is not correct.
Not accurate because sentence #3 is not correct.
Not accurate because sentence #4 is not correct.
Not accurate because more than one sentence is not correct.
question 1
Which of the following provides evidence that the thermal energy of an object is decreasing?
A. its speed is incresing
b. its speed is decreasing
c. its temperature is increasing
d. its temperature is decreasing
question 2
A chair is pushed across the floor, and then let go. The chair comes to a very quick stop. A previous student wrote an explanation narrative for why the chair slows down after being let go. Read her evaluation, and then evaluate it for accuracy.
(1) There is a contact push/pull interaction between the chair and floor. (2) During the interaction, energy is transferred from the chair to the floor. (3) The kinetic energy of the chair decreases while its thermal energy increases, as well as the thermal energy of the floor. (4) Because the thermal energy of the chair increases, it slows down. This explanation is
A.Accurate as written.
B.Not accurate because sentence #1 is not correct.
C.Not accurate because sentence #2 is not correct.
D.Not accurate because sentence #3 is not correct.
E.Not accurate because sentence #4 is not correct.
F.Not accurate because more than one sentence is not correct.
Explanation / Answer
According to chegg Q&A policy only the first question needs to be answered...
So,
Since the thermal energy of any substance is directly proportional to it's temerature.
i.e. object at high temperature will have greater thermal energy e.g. Sun.
So if the temperature starts decreasing then the thermal energy will also start decreasing.
Hence ,
d. is the correct choice.
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