Consider a stretched rubber band where experimental observations show that the tension f is proportional to...
Consider a stretched rubber band where experimental observations show that the tension f is proportional to temperature T if length L is held constant. Show that
1) The internal energy U is only a function of temperature.
2) adiabatic stretching of the band results in an increase in temperature.
3) the band will contract if warmed while kept under constant tension.
Homework Answers
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Consider a stretched rubber band where experimental observations
show that the tension f is proportional to...
Consider the following observation: A rubber band is stretched under tension (at least 0.5 cm wide)...
Consider the following observation: A rubber band is stretched under tension (at least 0.5 cm wide) and then touched to the Upper lip and found to be warm. Then the rubber band is relaxed and stretched a second time and held under tension for several seconds. The rubber band is relaxed and touched to the upper lip and found to have a cooling effect. Analyze these two observation using delta G = Delta H - T delta S for the...
4. A rubber band of dimensions 10 mm x 2 mmx 200 mm is stretched 5...
4. A rubber band of dimensions 10 mm x 2 mmx 200 mm is stretched 5 times its original length at 20�C. Calculate the heat gained or lost. The number of chains per unit m^3 is 1.9 x 10^26.Where w is the work per unit volume. Delta U = delta W + delta Q (U = internal energy of system, W = total work performed on the system. Q = heat added to the system). Hint: you need to assume...
Problem 3 (30 points) 3.1 A rubber band, 5cm long, is stretched uniaxially to 10cm at 25C and is ...
Problem 3 (30 points) 3.1 A rubber band, 5cm long, is stretched uniaxially to 10cm at 25C and is held in this state. The stress at this length is found to increase by 1.2-10 Pa when the temperature is raised to 30°C. Assuming ideal behavior calculate (a) the concentration of elastically active strands; (b) Young's moduļus (E) at 2% ofelongation of the rubber at 25°C (E-o(at 2% of elongation)/0.02) (10 points) 3.2 Stress-strain measurements on lightly vulcanized naturally rubber sample...
link phenomena at these measurements, if we have a reliable model and appropriate mathematical skills to two length scales. You will be able to predict the behavior of rubber under a variety of...
link phenomena at these measurements, if we have a reliable model and appropriate mathematical skills to two length scales. You will be able to predict the behavior of rubber under a variety of practical Preliminary calculations Consider a piece of rubber with initial dimensions and orientation shown in the diagram below: to bo where lo, bo, and to are the unstretched length, width, and thickness, respectively Then L./ lo A force F is applied parallel to the x-axis, stretching the...
please solve 17 for me thanks~~ :) ! temperature f(x) °C, where 5. f(x) = sin 0.1 x 6 f(x) = 4 - 08 |x - 5 7. fix) =x(1...
please solve 17 for me thanks~~ :) !
temperature f(x) °C, where 5. f(x) = sin 0.1 x 6 f(x) = 4 - 08 |x - 5 7. fix) =x(10 - x) 8 Arbitrarytemperatures at ends. If the ends x = 0 and x= Lof the bar in the text are kept at constant 20. CAS PROJECT. Isotherms. Fim solutions (tempe rature s) in the squa with a 2 satisfying the followin tions. Graph isotherms. (a) u80 sin Tx on...
A long steel bar (length L-100 m, elastic modulus E = 2x 1011 N/m2, density ρ...
A long steel bar (length L-100 m, elastic modulus E = 2x 1011 N/m2, density ρ 7850 kgm3) of unit cross section is held at one end while hanging freely inside a deep pit and you are asked to estimate the longitudinal stress and displacement along the length of the bar Assuming linear elastic behavior, the internal elastic energy U of the hanging bar is given by the expression where z is the distance from the top of the pit...
A 3 m rigid bar AB is supported with a vertical translational spring at A and a pin at B The bar is subjected to a linearly varying distributed load with maximum intensity g Calculate the ver...
A 3 m rigid bar AB is supported with a vertical translational spring at A and a pin at B The bar is subjected to a linearly varying distributed load with maximum intensity g Calculate the vertical deformation of the spring if the spring constant is 700 kN/m. (ans: 21.43 mm) 2. A steel cable with a nominal diameter of 25 mm is used in a construction yard to lift a bridge section weighing 38 kN. The cable has an...
please answer all prelab questions, 1-4. This is the prelab manual, just in case you need...
please answer all prelab questions, 1-4.
This is the prelab manual, just in case you need background
information to answer the questions. The prelab questions are in
the 3rd photo.
this where we put in the answers, just to give you an
idea.
Lab Manual Lab 9: Simple Harmonic Oscillation Before the lab, read the theory in Sections 1-3 and answer questions on Pre-lab Submit your Pre-lab at the beginning of the lab. During the lab, read Section 4 and...
just one example/demonstration! Data needed to be calculated is in highlighted in green boxes. And I...
just one example/demonstration!
Data needed to be calculated is in highlighted in green boxes.
And I highlighted in red an equation (not sure if thats what you
use to calculate it) And ignore the lab instructions on completeing
a graph!! I already know how to do that in excel, just curious how
Ln (relative rate) and 1/T in K^-1 is calculated by hand*
here is the rest of that lab leading up to the question as I
know its typically...
1. According to the paper, what does lactate dehydrogenase (LDH) do and what does it allow...
1. According to the paper, what does lactate dehydrogenase
(LDH) do and what does it allow to happen within the myofiber? (5
points)
2. According to the paper, what is the major disadvantage of
relying on glycolysis during high-intensity exercise? (5
points)
3. Using Figure 1 in the paper, briefly describe the different
sources of ATP production at 50% versus 90% AND explain whether you
believe this depiction of ATP production applies to a Type IIX
myofiber in a human....
Consider the following observation: A rubber band is stretched under tension (at least 0.5 cm wide) and then touched to the Upper lip and found to be warm. Then the rubber band is relaxed and stretched a second time and held under tension for several seconds. The rubber band is relaxed and touched to the upper lip and found to have a cooling effect. Analyze these two observation using delta G = Delta H - T delta S for the...
4. A rubber band of dimensions 10 mm x 2 mmx 200 mm is stretched 5 times its original length at 20�C. Calculate the heat gained or lost. The number of chains per unit m^3 is 1.9 x 10^26.Where w is the work per unit volume. Delta U = delta W + delta Q (U = internal energy of system, W = total work performed on the system. Q = heat added to the system). Hint: you need to assume...
Problem 3 (30 points) 3.1 A rubber band, 5cm long, is stretched uniaxially to 10cm at 25C and is held in this state. The stress at this length is found to increase by 1.2-10 Pa when the temperature is raised to 30°C. Assuming ideal behavior calculate (a) the concentration of elastically active strands; (b) Young's moduļus (E) at 2% ofelongation of the rubber at 25°C (E-o(at 2% of elongation)/0.02) (10 points) 3.2 Stress-strain measurements on lightly vulcanized naturally rubber sample...
link phenomena at these measurements, if we have a reliable model and appropriate mathematical skills to two length scales. You will be able to predict the behavior of rubber under a variety of practical Preliminary calculations Consider a piece of rubber with initial dimensions and orientation shown in the diagram below: to bo where lo, bo, and to are the unstretched length, width, and thickness, respectively Then L./ lo A force F is applied parallel to the x-axis, stretching the...
please solve 17 for me thanks~~ :) !
temperature f(x) °C, where 5. f(x) = sin 0.1 x 6 f(x) = 4 - 08 |x - 5 7. fix) =x(10 - x) 8 Arbitrarytemperatures at ends. If the ends x = 0 and x= Lof the bar in the text are kept at constant 20. CAS PROJECT. Isotherms. Fim solutions (tempe rature s) in the squa with a 2 satisfying the followin tions. Graph isotherms. (a) u80 sin Tx on...
A long steel bar (length L-100 m, elastic modulus E = 2x 1011 N/m2, density ρ 7850 kgm3) of unit cross section is held at one end while hanging freely inside a deep pit and you are asked to estimate the longitudinal stress and displacement along the length of the bar Assuming linear elastic behavior, the internal elastic energy U of the hanging bar is given by the expression where z is the distance from the top of the pit...
A 3 m rigid bar AB is supported with a vertical translational spring at A and a pin at B The bar is subjected to a linearly varying distributed load with maximum intensity g Calculate the vertical deformation of the spring if the spring constant is 700 kN/m. (ans: 21.43 mm) 2. A steel cable with a nominal diameter of 25 mm is used in a construction yard to lift a bridge section weighing 38 kN. The cable has an...
please answer all prelab questions, 1-4.
This is the prelab manual, just in case you need background
information to answer the questions. The prelab questions are in
the 3rd photo.
this where we put in the answers, just to give you an
idea.
Lab Manual Lab 9: Simple Harmonic Oscillation Before the lab, read the theory in Sections 1-3 and answer questions on Pre-lab Submit your Pre-lab at the beginning of the lab. During the lab, read Section 4 and...
just one example/demonstration!
Data needed to be calculated is in highlighted in green boxes.
And I highlighted in red an equation (not sure if thats what you
use to calculate it) And ignore the lab instructions on completeing
a graph!! I already know how to do that in excel, just curious how
Ln (relative rate) and 1/T in K^-1 is calculated by hand*
here is the rest of that lab leading up to the question as I
know its typically...
1. According to the paper, what does lactate dehydrogenase
(LDH) do and what does it allow to happen within the myofiber? (5
points)
2. According to the paper, what is the major disadvantage of
relying on glycolysis during high-intensity exercise? (5
points)
3. Using Figure 1 in the paper, briefly describe the different
sources of ATP production at 50% versus 90% AND explain whether you
believe this depiction of ATP production applies to a Type IIX
myofiber in a human....
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