What is the net change in internal energy
A system is acted on by its surroundings in a way that it receives 50 J of heat while simultaneously doing 20 J of work. What is its net change in internal energy? Show Work!
A. 70 J
B. 30 J
C. Zero
D. -30 J
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Assumed that it is reasonable to believe that the population is approximately normal and the population standard deviation 63. what is the upper bound of the 95% confidence interval for the battery life for all e-readers of this type?
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