what is the solution to these problems? A 40.0 g piece of cadmium is at15°C. If
ID: 1670001 • Letter: W
Question
what is the solution to these problems? A 40.0 g piece of cadmium is at15°C. If 415 cal of energy is added to the cadmium, what isits final temperature?1°C
As part of an exercise routine, a 65.0kg person climbs 16.0 meters up avertical rope. How many (food) Calories are expended in a singleclimb up the rope? (1 food Calorie = 103 calories)
1 Cal what is the solution to these problems? A 40.0 g piece of cadmium is at15°C. If 415 cal of energy is added to the cadmium, what isits final temperature?
1°C
As part of an exercise routine, a 65.0kg person climbs 16.0 meters up avertical rope. How many (food) Calories are expended in a singleclimb up the rope? (1 food Calorie = 103 calories)
1 Cal
Explanation / Answer
We know that Q = mcT ==> Tf = Ti + (Q / mc ) = 15 + (415 / 40 * 0.231) = 15 + 45 = 60oC (b) Q = mgh = 65 * 9.8 * 16 * 1calorie / 4.186J =2435 calories = 2.435 food calories
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