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5 November, 11:47

Convert 6.95*105 cal to joules. recall that 1 cal=duncan takes a break from studying and goes to the gym to swim laps. if swimming burns 6.95*105 cal per hour, how many kilojoules does swimming burn in that same amount of time? in other words, convert 6.95*105 cal to kilojoules. 4.184 j.

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  1. 5 November, 12:06
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    For this problem, let's use the approach of dimensional analysis. This technique is done by cancelling out like units that appear both on the numerator and the denominator side. As a result, this technique will let you know that your final answer conforms to what parameter is asked. In this case, the final answer should be in kJ. We use the conversion: 1000 cal = 4.184 kJ The solution is as follows:

    6.95*10 ⁵ cal * 4.184 kJ/1000 cal = 2,907.88 kJ
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