growley52
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About
Former US Army Artillery officer, banker, and now an instructor. I hold a BS and MAT in Physics, and have been accredited as a teacher in New Mexico, Washington and Nebraska to teach physics, chemistry, and mathematics. At The USC in Columbia, SC, I was the evening network manager for the College of Liberal Arts Computer Lab (now the College of Arts and Science) for years.
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Answered a Question in Math
Let `u = sin(pi*x)` `y = 2^(u), (dy)/(du) = 2^(u)log2` `(du)/(dx) = cos(pi*x) * pi` and `y' = pi*log(2)*2^(sin(pi*x))*cos(pi*x)` 
Answered a Question in Math
`y = pi  x` is the exact answer. At `x = pi` `` `y = sin(sin(pi)) = sin(0) = 0` `y' = 1/2 (cos(x  sin(x)) + cos(x + sin(x))) = 1/2(cos(pi) + cos (pi))` =1. So y = x + pi, using the slope... 
Answered a Question in Science
First, let's get the symbols out of the way: Iron(III) oxide: `Fe_(2)O_(3) ` Carbon monoxide: `CO` And write the balanced equation for the reaction: `Fe_(2)O_(3)+ 3CO > 3CO_(2) + 2Fe` formula... 
Answered a Question in Science
While it doesn't directly pertain to your question, I would need to know more of your experimental setup. You're using the goniometer to measure the angular displacement; but what is the direction... 
Answered a Question in Science
The source: https://www.dartmouth.edu/~genchem/sigfigs.html says in rule 3, "Zeros to the left of the first nonzero digit are not significant." Your correct answer should read, using rule 4 "If...
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