t 5 A standard man climbs 13 m up a vertical rope. How much energy (in cal) is d
ID: 1793754 • Letter: T
Question
t 5 A standard man climbs 13 m up a vertical rope. How much energy (in cal) is dissipated as heat in a single dimb if 19% of the total energy required is used to do the work? (Assume the standard man has a mass of 70 kg.) 9082.816 ]cal Need Help?ReadIt Watt used brewery horses to spin the stirrer in the experiment with which he measured the work output of horses, and Joule later applied this experiment to demonstrate the equivalence of heat and work. Assume that Watt's brewery horses each did P-75 /s of work per second (this corresponds roughly to the definition of horsepower). If Watt had three horses moving in a circle for two hours to operate a stirrer in a well-isolated container filled with 1 m3 water at an initial temperature of 47°C, to what final value did the water temperature rise (in °C)? Use this table for the specific heat capacity of water oc Need Help? LRead It -/12.5 points ZinPhysl.S3 9.P.009. Water at the top of Niagara Falls has a temperature of +10.4°C. It falls a distance of 50 m. Assuming that all its potentiaExplanation / Answer
energy generated from three horses in their 2 hours
H = 3 * 750 * (2 * 60 * 60) = 1.62 * 107 J
From temperature change theorem H = m Cp * delta T
H = m Cp * (Tfinal - Tinitial)
1.62 * 107 = 1000 * 4186 * (Tfinal - 47)
(Tfinal - 47) = 3.87
Tfinal = 3.87 + 47
Tfinal = 50.87 oC
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.