The power output of a car engine running at 3000 rpm is400 kW.Express your answer in kilojoules.► View Available Hint(s)8.00 kJSubmitCorrectMODEL: Assume that the car engine follows a closed cycle.Previous AnswersSOLVE: Since 3000 rpm is 50.00 cycles per second, the work output of the car engine per cycle is1Wout (400) (5.0) eycles)= 8.00Part BV=How much heat is exhausted per cycle if the engine's thermal efficiency is 20.0%? Give your answer in kJ.Express your answer in kilojoules.► View Available Hint(s)ΑΣΦkJcycle?kJ

Answered: Part B How much heat is exhausted per…

Part B How much heat is exhausted per cycle if the engine's thermal efficiency is 20.0%? Give your answer in kJ. Express your answer in kilojoules. ▸ View Available Hint(s) 197 ΑΣΦ prome ?

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Please help me with parts A and B
Part A 100 mL of water at 20.0 °C is placed in the freezer compartment of a refrigerator with a coefficient of performance of 4.00. How much heat energy is exhausted into the room as the water is changed to ice at -5.00 °C? Express your answer with the appropriate units. μA Value Units Submit Request Answer ?
Part B Given the molar specific heat C, of a gas at constant volume, you can determine the number of degrees of freedom s that are energetically accessible. For example, at room temperature cis-2-butene, C₂Hg, has molar specific heat C₂ = 70.6. How many degrees of freedom of cis-2-butene are energetically accessible? Express your answer numerically to the nearest integer. ► View Available Hint(s) S= [5] ΑΣΦ Submit ?
10 o I Review I Co Part A A container holds 1.50 g of oxygen at a pressure of 7.90 atm. How much heat is required to increase the temperature by 107 °C at constant pressure? Express your answer with the appropriate units. HÁ Q = Value Units %3D Submit Request Answer Part B How much will the temperature increase if this amount of heat energy is transferred to the gas at constant volume? Express your answer in degrees Celsius.
Q2 Help please
12 of 13 A gas in a cylinder expands from a volume of 0.100 m³ to 0.330 m . Heat flows into the gas just rapidly enough to keep the pressure constant at 1.90x105 Pa during the expansion. The total heat added is 1.20x105 J . For related problem-solving tips and strategies, you may want to view a Video Tutor Solution of Thermodynamics of boiling water. Part A Find the work done by the gas. Express your answer in joules. ? W J Submit Request Answer Part B Find the change in internal energy of the gas.
Homework 5 Problem 3: The engine of a large ship does 1.8 × 108 J of work with an efficiency of 4.2 %. Part (a) How much heat transfer occurs to the environment in J? Qc = ______ Part (b) How many barrels of fuel are consumed, if each barrel delivers 6.8 × 109 J of heat when burned? N = ______
Question 3 0.70 moles of an ideal gas expands adiabatiacally from 1.0 atm to 2.5 atm at a temperature of 30 Celsius. Calculate the values of QW, ΔΗ, Δ S, and Δ G. Use the editor to format your answer
please help with part C :) Thank you!
Part A The value of specific heat for copper is 390 J/kg Co, for aluminun is 900 J/kg. C°, and for water is 4186 J/kg. Co. What will be the equilibrium temperature when a 235 g block of copper at 235 °C is placed in a 145 g aluminum calorimeter cup containing 865 g of water at 14.0°C? Express your answer using three significant figures. T = ΜΕ ΑΣΦ 0 ? °C
5.0 g of nitrogen gas at 20°C and an initial pressure of 2.8 atm undergo a constant-pressure expansion until the volume has tripled. Part C How much heat is transferred to the gas to cause this expansion? Express your answer with the appropriate units. ► View Available Hint(s) Qexp 3000 J Submit Previous Answers ✓ Correct The gas pressure is then decreased at constant volume until the original temperature is reached. Part D What is the gas pressure after the decrease? Express your answer with the appropriate units. View Available Hint(s)
Subject: physics