Module Five Lesson Two Assignment_ Real Life Predictions (12)

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Rocky Mount High School *

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12

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Mechanical Engineering

Date

Nov 24, 2024

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pdf

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1

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1. Where do you think the 70% (gasoline) and the other 50% (diesel) of the energies of the two engines goes? Use any past experience you have had with engines of any kind to hypothesize. I think the 70% of the energy in the gasoline engine goes into useful work, while the rest is wasted. In the diesel engine, I think that 50% of the energy goes into useful work, while the rest is wasted. 2. With the current concerns about the high cost of gasoline and diesel fuel, post me how much money it cost to fill up your family vehicle and then calculate the amount of money that was "wasted" due to percent yield. the cost to fill up my vehicle is $50. my vehicle has a fuel efficiency of 30 miles per gallon. If I drive 300 miles on full tank then 300 miles / 30 mpg = 10 gallons. Gas is about 3 dollars so…$50 / $3 per gallon = 16.67 gallons. To calculate the money wasted: (16.67 gallons - 10 gallons) * $3 per gallon = $20. So I would waste 20 dollars 3. Do you think the percent yield is accounted for in the "miles per gallon" MPG advertised for cars? Do you think it should be? Choose one of the following questions and use an internet search to support your answer. Post the link with your response. the percent yield and MPG are not directly related, it is important for car manufacturers to accurately advertise the fuel efficiency of their cars and for consumers to be aware of the various factors that can affect it. https://r.search.yahoo.com/_ylt=AwriiPyAh0BlO_UNfS8PxQt.;_ylu=Y29sbwNiZjEEcG9z AzEEdnRpZAMyNjA3OVRfMQRzZWMDc3I-/RV=2/RE=1698756608/RO=10/RU=https %3a%2f%2fwww.kbb.com%2fcar-advice%2fwhat-is-mpge%2f/RK=2/RS=eP88Zbs6LNg AUhpGvEFBFBFB8_k- Links to an external site. 4. Some experts think we have approached the highest efficiency that a gasoline engine can reach. What other things are engine companies doing to increase efficiency? One approach is to improve the design of the engine itself, such as by reducing friction between moving parts or optimizing the combustion process. Another approach is to incorporate new technologies, such as hybrid systems that combine gasoline engines with electric motors, or even fully electric engines. Reply
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