Recent content by aelarz

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    Find resulting temperature, heat quantity problem

    Thank you... I did not write in c because c for h20 is 1... so... heat to convert steam to h20+heat to cool steam+ heat to warm h20 = 0 -10,000(540)+10,000(1)(T-100)+500,000(1)(T-40) = 0 -5,400,000 + 10,000T -1,000,000 +500,000T-20,000,000 = 0 26,400,000 =510,000T T=51.8 C but which third...
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    Find resulting temperature, heat quantity problem

    Homework Statement Ten kilograms of steam at 100 degrees C is condensed by passing it into 500 kg water at 40 degrees C. What is the resulting temperature? Homework Equations sum of all heats must be = zero heat of vaporization for water = 540 cal/g change Q = c*m* change in T where Q...
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    Horsepower/friction problem, find Ff

    Ah! simple. it really is not the 'dog ate my homework' type excuse... but there are sticky keys on my calculator. thank you fewmet!
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    Horsepower/friction problem, find Ff

    Homework Statement A 900 kg car whose motor delivers a maximum power of 40.0 hp to its wheels can maintain a steady speed of 130 km/h on a horizontal roadway. How large is the friction force that impedes its motion at this speed? Homework Equations Power = work done by a force/time taken...
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