Question

A piston raises a weight, then lowers it again to its original height. If the process...

A piston raises a weight, then lowers it again to its original height. If the process the system follows as the piston rises is isothermal, and as it falls is isobaric, then is the work done by the gas positive, negative, or zero. Explain.

Homework Answers

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Please solve the following problems. You must show all work. 1. A 10.0 cm radius piston...
Please solve the following problems. You must show all work. 1. A 10.0 cm radius piston compresses a gas isothermally from a height of 15.0 cm to 2.50 cm at a constant pressure of 2.0 atm. a) How much heat was added to the gas? b) Now if 7000 J of heat is added to the system and the piston is only moves 5.0 cm up, what is the change in the internal energy of the system is the pressure...
Frictionless piston-cylinder system. Initially contains 167 L of saturated liquid Refrigerant-134a. The piston can move freely...
Frictionless piston-cylinder system. Initially contains 167 L of saturated liquid Refrigerant-134a. The piston can move freely in such that it maintains pressure at 877 kPa, an Isobaric process. The Refrigerant-134a is heated until its temperature rises to 70 ℃ Determine: The work was done during the process in (kJ) units?
A cylinder sealed with a piston contains an ideal gas. Heat is added to the gas...
A cylinder sealed with a piston contains an ideal gas. Heat is added to the gas while the piston remains locked in place until the absolute temperature of the gas doubles. 1. The pressure of the gas a. doubles b. stays the same c. drops in half 2. The work done by the surroundings on the gas is a. positive b. negative c. zero 3. The thermal energy of the gas a. doubles b. stays the same c. drops in...
A flask contains 90.7 moles of a monatomic ideal gas at pressure 5.64 atm and volume...
A flask contains 90.7 moles of a monatomic ideal gas at pressure 5.64 atm and volume 40.1 liters (point A on the graph. Now, the gas undergoes a cycle of three steps: - First there is an isothermal expansion to pressure 3.79 atm (point B on the graph). - Next, there is an isochoric process in which the pressure is raised to P1 (point C on the graph). - Finally, there is an isobaric compression back to the original state...
Piston in Water Bath Conceptual Work-Energy Problem Imagine a piston containing a sample of ideal gas...
Piston in Water Bath Conceptual Work-Energy Problem Imagine a piston containing a sample of ideal gas in thermal equilibrium with a large water bath. Assume that the piston head is perfectly free to move unless locked in place, and the walls of the piston readily allow the transfer of energy via heat unless wrapped in insulation. The piston head is unlocked and the gas is in an equilibrium state. For each of the actions described below, state whether the work...
Consider 5.000 mol of neon in a 208.7 cm^3 piston at 120.0 K. If the gas...
Consider 5.000 mol of neon in a 208.7 cm^3 piston at 120.0 K. If the gas undergoes isometric cooling to one-half of its initial temperature and then undergoes isothermal reversible expansion to four times of its initial volume, (a) compute the work done assuming the gas behaves ideally. Next, (b) compute the work done for the entire process assuming the gas behaves as a van der Waal's gas (a = 0.2050 atmL^2/mol^2, b = 1.670 x 10^-2 L/mol). (c) Compare...
A closed piston-cylinder system contains a 120 moles of neon, a monatomic ideal gas, at pressure...
A closed piston-cylinder system contains a 120 moles of neon, a monatomic ideal gas, at pressure PA = 2.5 atm and volume VA = 0.80 m3. It undergoes the following cyclic process: A -> B: I There is isothermal expansion to volume double of the original. B -> C: Constant-volume process back to its original pressure . C -> A: Constant-pressure process back to its initial state a) Draw a Pressure volume diagram for the cycle. You don't need to...
A simple (non-cyclic) heat engine. Consider a cylinder containing an ideal gas under a piston, as...
A simple (non-cyclic) heat engine. Consider a cylinder containing an ideal gas under a piston, as shown in Figure below. After a weight m1 is removed from the piston, the gas expands, lifts the remaining weight m2, and the piston eventually settles at a new position h2. A. Assuming that the above process is carried out in a room whose temperature is maintained constant so that the initial and the final temperature of the gas is exactly the same, what...
A cylinder with a piston contains 0.300 molmol of oxygen at 2.50×105 PaPa and 350 KK...
A cylinder with a piston contains 0.300 molmol of oxygen at 2.50×105 PaPa and 350 KK . The oxygen may be treated as an ideal gas. The gas first expands isobarically to twice its original volume. It is then compressed isothermally back to its original volume, and finally it is cooled isochorically to its original pressure. Figure of 0 Part A Part complete Find the work done by the gas during the initial expansion. -- SubmitPrevious AnswersRequest Answer Incorrect; Try...
Calculate the entropy production for the piston-cylinder power producing cycle you analyzed in, problem 1. Problem...
Calculate the entropy production for the piston-cylinder power producing cycle you analyzed in, problem 1. Problem 1: A piston cylinder device has a volume of 0.04 m3 and initially contains air at 293 K and 1 bar. This device is used to perform a cycle in which the gas is heated at a constant volume until the temperature reaches 1000 K. The air is allowed to expand following an isothermal process until the volume is 3.5 times the original volume....