33 lines
1.2 KiB
XML
33 lines
1.2 KiB
XML
<problem><script type="loncapa/python">
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i = random.randrange(3)
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M = ["Big Mac", "Angus Bacon and Cheese", "Quarter Pounder with Cheese"][i]
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C = [540, 790, 510][i]
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BM = C*1000*4.2
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CB = 50*12*3600
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</script><startouttext/>
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According to McDonald's
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<a href="http://nutrition.mcdonalds.com/getnutrition/nutritionfacts.pdf">nutrition
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facts</a> a \($M\) provides \($C\) kiloCalories of energy. (1 dietitian's
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calorie is 1000 physicist's calories.) A typical automobile lead-acid
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battery can supply 50 Ampere-hours at 12 Volts. We can compare these by
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converting the energy specifications to common units. The SI unit of
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energy is the Joule=1 Watt-second. One physicist's calorie is 4.2 Joules.
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<endouttext/>
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<startouttext/>
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<br/>
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How many Joules are there in a \($M\)?
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<endouttext/>
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<numericalresponse answer="$BM"><responseparam type="tolerance" default="5%" name="tol" description="Numerical Tolerance"/><textline/></numericalresponse>
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<startouttext/>
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<br/>
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How many Joules are there in a car battery?
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<endouttext/>
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<numericalresponse answer="$CB"><responseparam type="tolerance" default="5%" name="tol" description="Numerical Tolerance"/><textline/></numericalresponse>
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<startouttext/>
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<br/>
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Which tastes better? :-)
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<endouttext/>
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</problem>
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