The heat supplied is 500 J. The heat loss to the environment is 160 J. Step 2 Calculation: Write the expression for the work output from the heat engine. W=Q1-Q2 Here, W is the useful workout, Q1 is the supplied heat, and Q2 is the heat loss. Substitute, all known values in the above expression. W=400 J-160 J=240 J Thus, the useful work is 240 J. What is the efficiency of the heat engine in the preceding problem at top? a) 32% b) 54% c) 68%. d) 75% e) 175%

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 electrie energy. a. What is the actual coefficient of performance of the system? b. What is the theoretical maximum coefficient of performance of the system? а.

An ideal gas undergoes two thermodynamic processes as shown in FIGURE 1. a. Name the processes AB and BC. b. If the initial temperature is 40°C, find the temperatures at B and C. c. Find the total work done d. What is the total change in internal energy for these processes

The heat engine shown in the figure uses 2.0 mol of a monatomic gas as the working substance. (Figure 1) Figure p (kPa) 600 400 200- 0 0 0.025 0.050 V (m³) Part A Determine T₁, T₂, and T₁. Enter your answers numerically separated by commas. Express your answer using two significant figures. T₁ T₂. T₂ = 600,1800,1200 K Submit Previous Answers ✓ Correct Part B Determine AEth. W. and Q for 1-2. Enter your answers numerically separated by commas. Express your answer using two significant figures. AEth. Ws. Q = 3.0x104.1.3x104.4.3x104 J Submit ✓ Correct ▾ Part C Previous Answers Determine AEth. W. and Q for 2-3. Enter your answers numerically separated by commas. Express your answer using two significant figures. AEth. Ws. Q= Submit ▾ Part D ΠΑΣΦ Request Answer I ? J

A heat engine takes in 14 kJ of energy and rejects 6 kJ to a low temperature sink. 1. How much work does the engine produce?  2. What is the efficiency of the heat engine?

Topic: HEAT ENGINES, HEAT PUMPS & THERMAL EFFICIENCY An engine takes in 9000 J and does 1700 J of work each cycle while operatingat the temperatures of 650ᵒC and 370ᵒC. a. What is the engine’s actual efficiency?b. What is its maximum theoretical efficiency?

Geothermal energy uses the subsurface level of the earth to heat up water converting it to steam and then using the steam to turn a turbine attached to a generator to generate electric energy. If the geothermal energy conversion process is 46% efficient and there was 789 J of electricity produced, how much energy did the steam have before reaching the turbine? answer 1715 eff=output/inputx 100

During a one-year time period, how many gallons of water would the average household save by using an efficiency washer vs a regular washer? Is this one-year savings more or less than the amount of water an average person drinks in a lifetime? Explain and show your assumptions, calculations, and conversions.Consider it to be 2 separate problems:1. How much water is saved in a one-year period when using an efficiency washer vs regular washer - answer based on your assumptions and calculations for full credit2. How much water does an average person drink in a lifetime – arrive at this answer based on your assumptions and calculations3. Compare the answers to those 2 questions to arrive at your conclusionBelow are 2 pieces of information that you might find helpful there are 128 oz in a gallonthere are 365 days in a year and also 52 weeks in a year

An engine takes in 600 J and exhausts 450 J each second is running. What is the engine's efficiency?