Consider the setup in Figure 1. In the setup, there is a volume of water with mass mw in an insulated container. Submerged in the water are a set of paddles, connected to a spindle. The spindle has an ideal string wrapped around it and is connected to a hanging mass m,. Assume the water and paddles are ina sealed, insulated container. Furthermore, considered the system to be the water (everything else is the environment). Upon release of the hanging mass the temperatureof the water begins to increase. a) What object(s) is/are doing work on the water? Please justify your answer. b) Is this an example of heating or work? Please justify your answer. c) What conditions are necessary such that the work done on the water is: W=mgh? Hint: Technically it is the force of tension that is spinning the paddles. So, how are the weight of the mass and the tension related? d) Once the mass is released it begins to fall at a constant speed. What must h be such that the temperature of the water increases by AT=T;? Please justify any assumptions you make. e) Now assume the mass is released, but it now accelerates at a rate of a=. What power is put into the water while increasing its temperature by AT=T:? Please give your answer
Consider the setup in Figure 1. In the setup, there is a volume of water with mass mw in an insulated container. Submerged in the water are a set of paddles, connected to a spindle. The spindle has an ideal string wrapped around it and is connected to a hanging mass m,. Assume the water and paddles are ina sealed, insulated container. Furthermore, considered the system to be the water (everything else is the environment). Upon release of the hanging mass the temperatureof the water begins to increase. a) What object(s) is/are doing work on the water? Please justify your answer. b) Is this an example of heating or work? Please justify your answer. c) What conditions are necessary such that the work done on the water is: W=mgh? Hint: Technically it is the force of tension that is spinning the paddles. So, how are the weight of the mass and the tension related? d) Once the mass is released it begins to fall at a constant speed. What must h be such that the temperature of the water increases by AT=T;? Please justify any assumptions you make. e) Now assume the mass is released, but it now accelerates at a rate of a=. What power is put into the water while increasing its temperature by AT=T:? Please give your answer
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
Related questions
Question
Please Answer Questions C and D and E
DO NOT ANSWER A and B
Transcribed Image Text:Thermometer
Insulated, known
volume of water
Figure 1: A falling mass is used to do work on water in an insulated container.
Consider the setup in Figure 1. In the setup, there is a volume of water with mass m, in an
insulated container. Submerged in the water are a set of paddles, connected to a spindle. The
spindle has an ideal string wrapped around it and is connected to a hanging mass mp. Assume
the water and paddles are ina sealed, insulated container. Furthermore, considered the system
to be the water (everything else is the environment). Upon release of the hanging mass the
temperatureof the water begins to increase.
a) What object(s) is/are doing work on the water? Please justify your answer.
b) Is this an example of heating or work? Please justify your answer.
c) What conditions are necessary such that the work done on the water is: W=mgh? Hint:
Technically it is the force of tension that is spinning the paddles. So, how are the weight
of the mass and the tension related?
d) Once the mass is released it begins to fall at a constant speed. What must h be such
that the temperature of the water increases by AT=T;? Please justify any assumptions
you make.
e) Now assume the mass is released, but it now accelerates at a rate of a=. What power is
put into the water while increasing its temperature by AT=T;? Please give your answer
in terms of m,, mw, Cw, g, and h.
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution!
Trending now
This is a popular solution!
Step by step
Solved in 3 steps with 1 images
Recommended textbooks for you
College Physics
Physics
ISBN:
9781305952300
Author:
Raymond A. Serway, Chris Vuille
Publisher:
Cengage Learning
University Physics (14th Edition)
Physics
ISBN:
9780133969290
Author:
Hugh D. Young, Roger A. Freedman
Publisher:
PEARSON
Introduction To Quantum Mechanics
Physics
ISBN:
9781107189638
Author:
Griffiths, David J., Schroeter, Darrell F.
Publisher:
Cambridge University Press
College Physics
Physics
ISBN:
9781305952300
Author:
Raymond A. Serway, Chris Vuille
Publisher:
Cengage Learning
University Physics (14th Edition)
Physics
ISBN:
9780133969290
Author:
Hugh D. Young, Roger A. Freedman
Publisher:
PEARSON
Introduction To Quantum Mechanics
Physics
ISBN:
9781107189638
Author:
Griffiths, David J., Schroeter, Darrell F.
Publisher:
Cambridge University Press
Physics for Scientists and Engineers
Physics
ISBN:
9781337553278
Author:
Raymond A. Serway, John W. Jewett
Publisher:
Cengage Learning
Lecture- Tutorials for Introductory Astronomy
Physics
ISBN:
9780321820464
Author:
Edward E. Prather, Tim P. Slater, Jeff P. Adams, Gina Brissenden
Publisher:
Addison-Wesley
College Physics: A Strategic Approach (4th Editio…
Physics
ISBN:
9780134609034
Author:
Randall D. Knight (Professor Emeritus), Brian Jones, Stuart Field
Publisher:
PEARSON