A defibrillator gives a high-energy shock of 360 J. What is this quantity of energy in calories?
STEP 1 State the given and needed quantities.
STEP 2 Write a plan to convert the given unit to the needed unit.
joules \space \space \overset{Energy}{factor} \space \space caloriesSTEP 3 State the equalities and conversion factors.
_ 1 cal = 4.184 J
\frac{4.184 \space J}{1 \space cal} and \frac{1 \space cal}{4.184 \space J}
STEP 4 Set up the problem to calculate the needed quantity.
\underset{Two \space SFs}{360 \space \cancel J } \space \space \times \space \space \frac{\overset{Exact}{1 \space cal} }{\underset{Exact}{4.184 \space \cancel J} } \space \space= \space \space \underset{Two \space SFs}{86 \space cal}ANALYZE THE PROBLEM | Given | Need | Connect |
360 J | calories | energy factor |