Suppose the 1.000 kg of water in the figure starts at point A at time zero. Heat is added to this system at the rate of 12450 J/s How long does it take for the system to reach point B? How long does it take for the system to reach point C? How long does it take for the system to reach point D?
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Suppose the 1.000 kg of water in the figure starts at point A at time zero. Heat is added to this system at the rate of 12450 J/s
How long does it take for the system to reach point B?
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- Assume that Q₁ = -15.0 J and Q2 = -80.0 J in (Figure 1). For help with math skills, you may want to review: Substituting Numbers into Mathematical Expressions For general problem-solving tips and strategies for this topic, you may want to view a Video Tutor Solution of Heat engine details. Figure p (kPa) 400 200 0- 0 100 200 22 1 of 1 - V (cm³) Part B What is QH for the heat engine shown in the figure? Express your answer with the appropriate units. QH = 125 J Submit Part C Correct n = Previous Answers What is the thermal efficiency for the heat engine shown in the figure? Submit - ΑΣΦ Request Answer ?An ice-making machine inside a refrigerator operates in a Carnot cycle. It takes heat from liquid water at 0.0 °C and rejects heat to a room at a temperature of 23.2 °C. Suppose that liquid water with a mass of 75.6 kg at 0.0 °C is converted to ice at the same temperature. Part A Take the heat of fusion for water to be LĘ = 3.34x105 J/kg. How much heat |QH| is rejected to the room? Express your answer in joules to four significant figures. > View Available Hint(s)QUESTION 16 The temperature at state A is 20.0°C, that is 293 K. During the last test, you have found the temperature at state D is 73.0 K and n = 164 moles for this monatomic ideal gas. What is the change in thermal energy for process A to D, in MJ (MegaJoules)? Your answer needs to have 2 significant figures, including the negative sign in your answer if needed. Do not include the positive sign if the answer is positive. No unit is needed in your answer, it is already given in the question statement. p (atm) 5 4 3 2 1 0 A D 1 2 3 4 B 5 → V (m³)
- A crate of fruit with a mass of 40.0 kg and a specific heat capacity of 3550 J/(kg. K) slides 9.00 m down a ramp inclined at an angle of 40.0 degrees below the horizontal. Part A If the crate was at rest at the top of the incline and has a speed of 2.55 m/s at the bottom, how much work Wf was done on the crate by friction? Use 9.81 m/s² for the acceleration due to gravity and express your answer in joules. ► View Available Hint(s) Wf = -2140 J Submit Correct The frictional force opposes the motion of the crate, so the work done on the crate by friction must be a negative quantity. Part B Previous Answers If an amount of heat equal to the magnitude of the work done by friction is absorbed by the crate of fruit and the fruit reaches a uniform final temperature, what is its temperature change AT? ► View Available Hint(s) AT = ΑΣΦ WAn sulated container holds 100g of water at 30C. A 50g ice cube at 0C is dropped into the water and no heat is allowed to enter or leave the ice water container. What is the final termperature and thermodynamic state of the system after it comes to equilibrium. Hello. This is a practice problem I'm working on and I'm not sure if I'm aproaching the problem correctly. Thank you for the help.In an engine, an almost ideal gas is compressed adiabatically to half its volume. In doing so, 2710 J of work is done on the gas. Part A ▼ How much heat flows into or out of the gas? Express your answer with the appropriate units. ? Q = Value Units Submit Request Answer Part B What is the change in internal energy of the gas? Express your answer with the appropriate units. HẢ ? AU = Value Units Submit Request Answer
- Please answer this within 30 mins ! I will upvote !A typical coal-fired power plant burns 300 metric tons of coal every hour to generate 2.7 × 106 MJ of electric energy. 1 metric ton = 1000 kg; 1 metric ton of coal has a volume of 1.5 m3. The heat of combustion of coal is 28 MJ/kg. Assume that all heat is transferred from the fuel to the boiler and that all the work done in spinning the turbine is transformed into electric energy.a. Suppose the coal is piled up in a 10 m × 10 m room. How tall must the pile be to operate the plant for one day?b. What is the power plant’s efficiency?ONLY PART D A light airplanes gasoline engine in an airplane, operating at 2.40 ✕ 103 rev/min, takes in energy 8.00 ✕ 103 J and exhausts 4.55 ✕ 103 J for each revolution of the crankshaft. (a) How many liters of fuel does it consume in 1.00 h of operation if the heat of combustion of the fuel is equal to 4.03 ✕ 107 J/L? 28.58 L/h (b) What is the mechanical power output of the engine? Ignore friction and express the answer in horsepower. 184.98 hp (c) What is the torque (in N · m) exerted by the crankshaft on the load? 549.08 N · m (d) What power (in W) must the exhaust and cooling system transfer out of the engine? __________W