While shadowing a dentist Evelyn learns that lasers are the next big thing in "holistic" dentistry, so she volunteers in a Physics Lab at UCI that. But before they trust her with lasers, however, they have Evelyn design the gas power cycle that will power the laser. In Evelyn's power cycle, air is initially at a pressure of 420 kPa and a volume of 3 m³. In the first step, the air undergoes Isochoric compression to a pressure of 750 kPa. In the second step, it undergoes isobaric expansion to a volume of 7 m³. In the third step, the air undergoes isothermal expansion until its pressure drops to 420 kPa. In the fourth and final step, the air undergoes isobaric contraction to a volume of 3 m². What is the net heat flow, per cycle, for Evelyn's cycle? [Hint: Draw a PV diagram of the process. It will help.] O 1.738 kJ 860 kJ O2.054 kJ O 3.173 kJ

While shadowing a dentist Evelyn learns that lasers are the next big thing in "holistic" dentistry, so she volunteers in a Physics Lab at UCI that. But before they trust her with lasers, however, they have Evelyn design the gas power cycle that will power the laser. In Evelyn's power cycle, air is initially at a pressure of 420 kPa and a volume of 3 m³. In the first step, the air undergoes Isochoric compression to a pressure of 750 kPa. In the second step, it undergoes isobaric expansion to a volume of 7 m³. In the third step, the air undergoes isothermal expansion until its pressure drops to 420 kPa. In the fourth and final step, the air undergoes isobaric contraction to a volume of 3 m². What is the net heat flow, per cycle, for Evelyn's cycle? [Hint: Draw a PV diagram of the process. It will help.] O 1.738 kJ 860 kJ O2.054 kJ O 3.173 kJ

College Physics

10th Edition

ISBN:9781285737027

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter11: Energy In Thermal Processes

Section: Chapter Questions

Problem 1WUE

See similar textbooks

Similar questions

58. A retired partner from a large brokerage firm hasone million dollars available to invest in particularstocks or bonds. Each investment’s annual rate ofreturn depends on the state of the economy in thecoming year. The file P09_58.xlsx contains thedistribution of returns for these stocks and bonds asa function of the economy’s state in the coming year.As this file indicates, the returns from stocks andbonds in a fair economy are listed as X and Y. Thisinvestor wants to allocate her one million dollars tomaximize her expected value of the portfolio oneyear from now.a. If X 5 Y 5 15%, find the optimal investment strategy for this investor. (Hint: You could try a decisiontree approach, but it would involve a massive tree.It is much easier to find an algebraic expression forthe expected final value of the investment whena percentage p is put in stocks and the remainingpercentage is put in bonds.)b. For which values of X (where 10% , X , 20%)and Y (where 12.5% , Y , 17.5%), if any,…
A PHYS 1510 student was working on a robotics project. The joints on the machine they were building were powered by pistons. Based on how hot the machine was getting, the student was able to figure out that 2.34 J of thermal energy was produced by every piston every time the piston was fully extended to 0.4064 m. What was the force of friction that the piston experienced during every extension? Assume friction is the only source of thermal energy. Include units in Sl.
Much of the gas near the Sun is atomic hydrogen. Its temperature would have to be 1.5×107 K for the average velocity vrms to equal the escape velocity from the Sun. What is that velocity?
What is the r.m.s speed of diatomic tritium (T2) in which the nucleus contains two neutrons and one proton at 273k and 100kPa.
Why do we work at a temperature of 25°C. What happens if we increase the temperature ?
If you launch a projectile upward with a high enough speed, its kinetic energy is sufficient to allow it to escape the earth’s gravity— it will go up and not come back down. Given enough time, hydrogen and helium gas atoms in the earth’s atmosphere will escape, so these elements are not present in our atmosphere. Explain why hydrogen and helium atoms have the necessary speed to escape but why other elements, such as oxygen and nitrogen, do not.
Starting with an ideal gas particle bouncing around in a cube, derive the relationship between the energy and the pressure and volume. Use the ideal gas law to relate kinetic energy and temperature.
Would you be willing to financially back an inventor who is marketing a device that she claims has 25 kJ of heat transfer at 600 K, has heat transfer to the environment at 300 K, and does 12 kJ of work? Explain your answer.
Converting sunlight to electricity with solar cells has an efficiency of ≈15,. It’s possible to achieve a higher efficiency (though currently at higher cost) by using concentrated sunlight as the hot reservoir of a heat engine. Each dish as shown concentrates sunlight on one side of a heat engine, producing a hotreservoir temperature of 650°C. The cold reservoir, ambient air, is approximately 30°C. The actual working efficiency of this device is ≈30,. What is the theoretical maximum efficiency?
Battleships! In 1905, as part of the Russo-Japanese War, the Imperial Japanese Navy (IJN) under the command of Admiral Togo engaged the Russian fleet under the command of Admiral Rozhestvensky in the Battle of Tsushima. This was the first major naval engagement to be dominated by "big guns." In this question we will model the 12" Armstrong Whitworth guns employed by the IJN. The guns are capable of firing a 390kg shell at a speed of 732ms-1. For simplicity, we shall assume that this shell is a sphere of diameter D such that the drag due to air resistance can be approximated as 1 FD 2 CppAv²: = cv? 16 where Cp= 1/2 is the approximate drag coefficient for a sphere, A = T(D/2)2 is the reference area, p - 1.225kgm-3 is the density of air at sea level, and v is the velocity, whence C = 16PD? The overall force experienced by our shell in flight is hence F = mg - - cv³v , where m is the mass of the shell and g is the acceleration due to gravity, v= v and v^ = v/v, with v corresponding to the…
A tank containing water is pressurized with air to a pressure of 30 psig. With the pressure in the tank as the driving force, the tank is feeding water at a rate of 15 GPM to another tank at atmospheric pressure through a 1.5 inch line. What would the pressure in the tank need to be increased to in order to increase the flow to 30 GPM?
A painter drops a 2.50 kg can from a height of 10.0 m. What is K (in Joules) at a height of 4.46 m? Type your answer.