Constants Part A A gasoline engine has a power output of 175 kW (about 2 34-105...
A gasoline engine has a power output of 170 kW (about 2.28×105 hp ). Its thermal efficiency is 22.0 %. 1- How much heat must be supplied to the engine per second? Express your answer in joules per second. 2-How much heat is discarded by the engine per second? Express your answer in joules per second.
A gasoline engine with a thermal efficiency of 39 % has a power output of 50 hp. How much heat must be supplied per second to the engine? Express your answer in kilojoules.
Let's begin with an efficiency analysis of a gasoline engine. The engine in a large truck takes in 2500 J of heat and delivers 500 J of mechanical work per cycle. The heat is obtained by burning gasoline with heat of combustion Le = 5.0 x 104 J/g. (a) What is the thermal efficiency of this engine? (b) How much heat is discarded in each cycle? (c) How much gasoline is burned during each cycle? (d) If the engine goes...
Part 1 of 2 A Carnot engine has a power output of 65 kW. The engine operates between two reservoirs at 25 degrees Celsius and 253 degrees Celsius. How much thermal energy is absorbed each hour? Answer in units of J. Part 2 of 2 How much thermal energy is lost per hour? Answer in units of J.
Constants Part A When its engine of power 70 kW is generating full power, a small single-engine airplane with mass 670 kg gains altitude at a rate of 2.4 m/s What fraction of the engine power is being used to make the airplane climb? (The remainder is used to overcome the effects of air resistance and of inefficiencies in the propeller and engine.) Express your answer as a percentage using two significant figures 215 Submit X Incorrect: Try Again; 4...
A gasoline engine in a large truck takes in 10,000 J of heat and deliver 2,000 J of mechanical work. per cycle. The heat is obtained by burning gasoline with heat of combustion L-5.0 10* J/g. Heat of combustion of gasoline is how much energy gasoline produces by combustion per g.(20 points) a) What is the thermal efficiency of this engine? (4 points) b) How much heat is discard in each cycle? (4 points) c) How much gasoline is burned...
A Carnot engine has a power output of 167 kW. The engine operates between two reservoirs at 29◦C and 207◦C. A) How much thermal energy is absorbed each hour? Answer in units of J. B) How much thermal energy is lost per hour? Answer in units of J.
A car engine whose output power is 145 hp operates at about 16 % efficiency. Assume the engine's water temperature of 79 ∘C is its cold-temperature (exhaust) reservoir and 495 ∘C is its thermal "intake" temperature (the temperature of the exploding gas-air mixture). What is the ratio of its efficiency relative to its maximum possible (Carnot) efficiency? Estimate how much power (in watts) goes into moving the car. How much heat, in joules and in kcal, is exhausted to the...
A car engine whose output power is 205 hp h p operates at about 18 % % efficiency. Assume the engine's water temperature of 94 ∘C ∘ C is its cold-temperature (exhaust) reservoir and 495 ∘C ∘ C is its thermal "intake" temperature (the temperature of the exploding gas-air mixture). How much heat, in joules and in kcal, is exhausted to the air in 1.0 hh.
Constants Part A The temperature within the Earth's crust increases about 1.0 C for each 22 m of depth. The thermal conductivity of the crust is 0.80 J/s C.m. Determine the heat transferred from the interior to the surface for the entire Earth in 1.0 h. Express your answer to two significant figures and include the appropriate units. Qinteriror = 6.7x1016 J Previous Answers Submit Correct Part B Compare this heat to the 1000 W/m2 that reaches the Earth's surface...