A system is taken from the state A to the state B along two possible paths: path 1 and path 2. See pictur Along which path is the work done by the system greater? PATH 1 PATH 2
Q: Consider the following figure. P( MPa) 10 8. 6. 2 V (m³) 2 4 6 8 10 12 (a) Determine the work done…
A: Work done = Area under the curve in (P-V) coordinates,Work done = A1+A2+A3 = 3*(12-3) +…
Q: a) Find the change in the mechanical energy (potential + kinetic) of the block from the top to the…
A:
Q: A fire is lit in a hot air balloon, causing 100 J of heat to flow into the air in the balloon.…
A: The change in internal energy is given by, ∆U=Q-W
Q: Water near the surface of a tropical ocean has a temperature of 298.2 K (25.0°C), while water 700 m…
A: Given: Surface high temperature, Th = 298.2 K 700 m beneath surface temperature, Ts = 280.2K
Q: in the figure. The arrows of the curve indicate the direction of the process, and the points of…
A: As we know,Area under P-V curve is…
Q: A conical tank full of gasoline is 8 feet across the top and 6 feet high. How much work is done in…
A: The volume of a cone is given by the formula V = (1/3)πr2 h, where r is the radius of the circular…
Q: This pV diagram shows three possible paths for changing a system from an initial state, represented…
A: Work done in PV diagram is calculated as area covered by the path process. If area covered by path…
Q: This time, the pendulum is 1.07 m long and has a mass of 4.92 kg. You give it a push away from…
A: length (L) = 1.07 m mass (m) = 4.92 kg initial speed = 2.88 msenergy lost = 1 J
Q: A balloon is inflated inside of a container pressured to 1 atm. The container is then suddenly…
A: Given :- A balloon is inflated inside of a container pressured to 1 atm. The container is then…
Q: A 3.50 kg block of ice slides down a ramp. The block starts at the top of the ramp from rest, and…
A:
Q: Consider a car trip into the mountains. Construct a problem in which you calculate the overall…
A: The road trip starts and ends at rest. So the only energy consumption will be because of the…
Q: A hot water heater in a residential home runs for an average of 2.5 hours per day with a heat energy…
A: Solution-Given thatAverage running hour of water heater per day (t)=2.5 hours=2.5×60×60 seconds=9000…
Q: How much work is done on the gas in the process shown, in Joule?
A: A PV-diagram showing a thermodynamic process. Note: 1 kPa=1000 Pa 1 m3=106 cm3 1 J=1 Pa·m3 Find:…
Q: An electric-powered snow-thrower machine throws snowballs 0.3 kg each at a speed of 9 m/s. The…
A:
Q: Thermodynamics Question: A bunjee jumper jumps from a platform. They accelerate in speed downward…
A: Given condition : Acceleration of bungee jumper is downwards towards the ground. The cord fully gets…
Q: Why is the K constant in the equation
A: why 'K' is used in the equation
Q: bring about a 7.7 J/K increase in the entropy
A: The amount of energy that would have to be transferred to a room temperature environment to bring…
Q: A heat pump that is used to heat a house has a COP of 2.5. That is, the heat pump delivers 2.5 kWh…
A: Here heat transfer takes place from low energy to high energy but the energy is neither created nor…
Q: The figure (Figure 1) shows representations of six thermodynamic states of the same ideal gas…
A: The ideal gas equation is given by ,
Q: electric hot plate raises its own internal energy and the internal energy of a cup of water by 15000…
A: given Q = -2900 J ΔU = 15000 J
Q: If energy is always conserved, never created or destroyed, then why do most of the machines in our…
A: SOlution: To explain If energy is always conserved, never created or destroyed, then why do most of…
Q: How much internal energy was generated after crossing rough patch and What is the final velocity at…
A: The initial kinetic energy of the skier is A part of this energy is used to work against the…
Q: 1. Rick spends four hours researching on the internet and does 1090 J of work. In the process, his…
A: Given data The work done by rick is given as W = 1090 J. The decrease in internal energy is given…
Q: Which condition results to work done greater than the change in internal energy? ΔU > 0; ΔS >…
A:
Q: A hot water heater in a residential home runs for an average of 3.2 hours per day with a heat energy…
A: Given Data:- The number of hours per day that the heater runs: 3.2 h/day=3.2×3600 s/dayThe energy…
Q: The average electricity consumption of a house in Gainesville is known to be 1,007 kWh in a month…
A: As the monthly energy consumption is 1007 kWh therefore the daily energy consumption of Gainesville…
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- How would you describe the internal energy of a system in terms of the kinetic and potential energy of all its particles and atoms?4) Physical systems work in a “one-way street” – the amount of information we have about the state (energy state, position, velocity, etc.) of the molecules, atoms, and particles involved in general, decreases over time. A measure of the decrease of this type of information over time, or the increase in disorder, is called: energy force the adiabatic constant entropy workConsider a situation where you carry a 20-N box up a flight of stairs, raising its elevation by 5 m. When the box hits the floor its kinetic energy is converted into internal energy. O True False O II
- S(B, T) 1 T₁ T Figure A1 Figure A1 shows the entropy S of a paramagnetic solid as a function of its temperature T and imposed magnetic field B. Adiabatic cooling consists in bringing the system from state 1 to 3 by making it undergo an isothermal change of magnetic field from 1 to 2 followed by an isentropic adiabatic process from 2 to 3. The entropy of the solid can be approximated by the equation S(B,T) = So — K B² T2' - where K is a positive constant and Så is some reference entropy value. (a) Find the expression of the heat Q₁2 received by the system during the isothermal process from state 1 to 2. Discuss the meaning of its sign. (b) Express the final temperature T3 as a function of B₂ and T₁. 3 T3 B₁ < B₂ B₂A 0.5 kg block slides on a rough horizontal table top. Just before it hits a horizontal ideal spring its speed is 4.28 m/s. It compresses the spring 3.59 cm before coming to rest. If the spring constant is 1673.75 N/m, the internal energy of the block and the table top, during the spring compression, must have increased by: a. -4.53 J b. -0.86 J c. -3.50 J d. -5.13 JI Review I Constants I Periodic Table A 68 kg hiker walks at 5.0 km/h up a 6 % slope. The indicated incline is the ratio of the vertical distance and the horizontal distance expressed as percentage. Part A For the steps and strategies involved in solving a similar problem, you may view a Video Tutor Solution. What is the necessary metabolic power? Hint: You can model her power needs as the sum of the 380 W power to walk on level ground plus the power needed to raise her body by the appropriate amount. Assume that the efficiency of the body in using energy is 25%. Express your answer with the appropriate units. HẢ ? P = Value Units Submit Request Answer
- With friction: For the car, what is the speed at the top of the loop (point D) if 4% of the total energy has been transformed into unusable heat energy from friction up to that point? m= 500. kg E Initial Velocity at point A = 1.5m/s 60 m D hmaxThe metabolic power for typing is 150 W for bob. For how long would bob have to type to use all the energy available in a typical fast food meal of burger, fries, and a drink, which the meal energy content is 5660 kJ (1350 food calorie), in hours?PROBLEM 4 A heat pump is used to meet the heating requirements of a house and maintain it at a comfortable temperature. On an average winter day, the house is estimated to lose heat at a rate of 80,000 kJ h¯¹. The heat pump has a COP of 2.5 under these conditions. Questions: (a) Determine the net power input required by the heat pump, in kW. (b) The rate at which heat is extracted from the cold outdoor air, in kW.
- 4. Suppose that a nuclear power plant has an efficiency of about 0.34, and generates 1000 MW of power. It is located on the banks of a major river that is 67 m wide near the plant, approximately 3 m deep, and flows at a rate of 0.5 m/s. Suppose that the plant re-routes all of this water into the plant and dumps its waste heat evenly throughout the water, then returns the warmer water to the river. How much warmer is the river downstream of the plant compared to upstream? Water's specific heat is approximately 4184 J/kg/K, and its density is 1000 kg/m³. [Answer: The water is warmer by 4.62 K. This is a lot warmer!]Q4/ An iron cube at a temperature of 300 °C is dropped into an insulated bath containing 20 kg water at 35°C. The water finally reaches a temperature of 50°C at steady state. Given that the specific heat of water and iron are equal to 4186 J/kg, K and 462 J/Kg, K respectively. Find the entropy changes for the iron cube and the water. Is the process irreversible? If so why?em 5 A NATO base in northern Norway is warmed with a heat pump that uses 7.0°C ocean water as the cold reservoir, Heat extracted from the ocean water warms fluid to 80° C; this warmed fluid is used to heat the building When the system is working at full capacity, 2000 kW of heat are delivered to the building at the cost of 600 kW of electric energy. Part A What is the actual coefficient of performance of the system? COP Submit Request Answer Part B What is the theoretical maximum coefficient of performance of the system? COPX Submit Request Answar P Type here to search