1. When you a place a rubber loose rubber band in contact with your lip, you...
1. When you a place a rubber loose rubber band in contact with your lip, you notice a slight increase in temperature when the rubber band is stretched.
a) Is work being done by the rubber band or is work being done on the rubber? b) Since there is not any heat added or removed from the rubber band what type of thermodynamic process can you say this is? c) Using the first law of thermodynamics and your answers to parts a and b, describe the physics behind this?
2. When you let the rubber band relax to its normal state, you feel a slight decrease in temperature
a) Is work now being done by the rubber band or on the rubber band? b) Since you are not adding or removing heat, what type of thermodynamic process is this? c) Using the 1st law of thermodynamics and your answers parts to a and b, describe the physics behind this?
Homework Answers
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1. When you a place a rubber loose rubber band in contact with
your lip, you...
S6. Remember Horatio? Once you convinced him that he should not apply for the Nobel Prize,...
S6. Remember Horatio? Once you convinced him that he should not apply for the Nobel Prize, he turned his attention to his hobby of stretching rubber bands. One day he accidentally touched a freshly stretched rubber band to his cleanly shaven face (Horatio, believed in obeying the dress and grooming code) and observed that heat was being evolved when the band was stretched. Excited by this discovery he raced to the lab and performed the following experiments. (1) A rubber...
Ligaments are like rubber bands in that they possess elastic qualities. When they are stretched slowly, the restoring f...
Ligaments are like rubber bands in that they possess elastic qualities. When they are stretched slowly, the restoring force is equal to the applied force, so it can be assumed that the process is reversible. You can also assume upon stretching the only work done is dw = fdl. Use the 1st Law and the definition of Helmholtz free energy to show how free energy relates to force (f)
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...
Ideal Gas Process Problem natomic ideal gas is run through the cycle shown starting in state...
Ideal Gas Process Problem natomic ideal gas is run through the cycle shown starting in state A. The temperature of the gas in state A 300 K. The cycle happens within a sealed chamber outfitted with a piston as necessary. P (Pa) A 5.00 x 105 + The Herring Cycle 1.00 x 105 + 14300k 2.00 6.00 The cycle is composed of three processes, A B, B C, and C - A. 1) For each individual process... (a) (b) Name...
1-When pressing a piston against argon gas inside a cylinder where the cylinder is in contact...
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Please help me about Physics, Thanks. A sample of 1.00 mole of a diatomic ideal gas...
Please help me about Physics, Thanks. A sample of 1.00 mole of a
diatomic ideal gas is intially at temperature 265K...........
Thermodynamic Processes involving Ideal Gases-in-class worksheet-(5 points) PHYS 181 Question B (B.) A sample of 1.00 mole of a diatomic ideal gas is initially at temperature 265 K and volume 0.200 m. The gas first undergoes an isobaric expansion, such that its temperature increases by 120.0 K. It then undergoes an adiabatic expansion so that its final volume is...
The first law of thermodynamics In thermal physics, we are often interested in the internal energy...
The first law of thermodynamics In thermal physics, we are often interested in the internal energy (E) of a system. The wo 41 internal energy of an ideal gas is proportional to the temperature and the number of moles of the gas. The internal energy can change when energy is exchanged with the system's environment (ie., objects that are outside the system of interest). The case above is one in which the internal energy of a gas changes due to...
Physics of the Human Arm If you have ever done bicep curls at the gym and looked at your arm in the mirror while you were doing it, you might have seen something like Figure 1 (plus or minus tan...
Physics of the Human Arm If you have ever done bicep curls at the gym and looked at your arm in the mirror while you were doing it, you might have seen something like Figure 1 (plus or minus tanned skin and/or hair! Figure 1: Outside of arm lifting a weight using mostly the contracted bicep muscles We know what's going on under your skin from anatomy. The bicep muscles are attached via tendons to the top of your shoulder...
1. What is the purpose of a constant volume gas thermometer. How does it work? 2. What is the difference, if any, betwee...
1. What is the purpose of a constant volume gas thermometer. How does it work? 2. What is the difference, if any, between a isothermal and adiabatic thermodynamic process. Draw them on a pV diagram. 3. Does the First Law of Thermodynamics apply to solids and liquids? Why or why not. 4. What is the most important heat transfer mechanism on earth where there is an atmosphere? Explain how this can cool a nuclear or coal fired power plant, and...
Physics question. Please answer all parts. Included is an equation sheet for reference. l) A scuba...
Physics question. Please answer all parts. Included is an equation
sheet for reference.
l) A scuba diver at a depth of 60 m and surrounding temperature of 5 C releases an air bubble of 10 cm a) Calculate the number of moles of the gas bubble. The pressure P at a given depth of water d is given by P pgd +P where p is the density of water, 1 g/cm and g is the acceleration due to gravity b)...
S6. Remember Horatio? Once you convinced him that he should not apply for the Nobel Prize, he turned his attention to his hobby of stretching rubber bands. One day he accidentally touched a freshly stretched rubber band to his cleanly shaven face (Horatio, believed in obeying the dress and grooming code) and observed that heat was being evolved when the band was stretched. Excited by this discovery he raced to the lab and performed the following experiments. (1) A rubber...
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...
Ideal Gas Process Problem natomic ideal gas is run through the cycle shown starting in state A. The temperature of the gas in state A 300 K. The cycle happens within a sealed chamber outfitted with a piston as necessary. P (Pa) A 5.00 x 105 + The Herring Cycle 1.00 x 105 + 14300k 2.00 6.00 The cycle is composed of three processes, A B, B C, and C - A. 1) For each individual process... (a) (b) Name...
Please help me about Physics, Thanks. A sample of 1.00 mole of a
diatomic ideal gas is intially at temperature 265K...........
Thermodynamic Processes involving Ideal Gases-in-class worksheet-(5 points) PHYS 181 Question B (B.) A sample of 1.00 mole of a diatomic ideal gas is initially at temperature 265 K and volume 0.200 m. The gas first undergoes an isobaric expansion, such that its temperature increases by 120.0 K. It then undergoes an adiabatic expansion so that its final volume is...
The first law of thermodynamics In thermal physics, we are often interested in the internal energy (E) of a system. The wo 41 internal energy of an ideal gas is proportional to the temperature and the number of moles of the gas. The internal energy can change when energy is exchanged with the system's environment (ie., objects that are outside the system of interest). The case above is one in which the internal energy of a gas changes due to...
Physics of the Human Arm If you have ever done bicep curls at the gym and looked at your arm in the mirror while you were doing it, you might have seen something like Figure 1 (plus or minus tanned skin and/or hair! Figure 1: Outside of arm lifting a weight using mostly the contracted bicep muscles We know what's going on under your skin from anatomy. The bicep muscles are attached via tendons to the top of your shoulder...
Physics question. Please answer all parts. Included is an equation
sheet for reference.
l) A scuba diver at a depth of 60 m and surrounding temperature of 5 C releases an air bubble of 10 cm a) Calculate the number of moles of the gas bubble. The pressure P at a given depth of water d is given by P pgd +P where p is the density of water, 1 g/cm and g is the acceleration due to gravity b)...
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