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Homework 11

# Homework 11 - 1.587 5 0.699 1.609 2.236 1.710 6 0.778 1.792...

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ChE 210 Fall 2008 Vera Lee Homework 11 11.24.04 Problem 1 Variables: hours per day (hr): 6 hours per year (hr): 2190 electricity cost (\$/kW-hr): \$0.15 calculations for part I: calculations for part 2: calculation type of bulb: # of bulbs cost # of bulbs cost # of bulbs incadescent: 60-W 1 \$19.71 6 \$118.26 75-W 1 \$24.64 4 \$98.55 100-W 1 \$32.85 2 \$65.70 fluorescent: 15-W 1 \$4.93 12 Results: total annual costs \$82.13 \$282.51 money saved by using all fluorescent:

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ChE 210 Fall 2008 Vera Lee Homework 11 11.24.04 s for part 3: cost \$59.13 \$59.13 \$223.38
ChE 210 Fall 2008 Vera Lee Homework 11 11.24.08 Problem 2 log_10 log_e square root cube root 1 0.000 0.000 1.000 1.000 2 0.301 0.693 1.414 1.260 3 0.477 1.099 1.732 1.442 4 0.602 1.386 2.000
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Unformatted text preview: 1.587 5 0.699 1.609 2.236 1.710 6 0.778 1.792 2.449 1.817 7 0.845 1.946 2.646 1.913 8 0.903 2.079 2.828 2.000 9 0.954 2.197 3.000 2.080 10 1.000 2.303 3.162 2.154 11 1.041 2.398 3.317 2.224 12 1.079 2.485 3.464 2.289 13 1.114 2.565 3.606 2.351 14 1.146 2.639 3.742 2.410 15 1.176 2.708 3.873 2.466 16 1.204 2.773 4.000 2.520 17 1.230 2.833 4.123 2.571 18 1.255 2.890 4.243 2.621 19 1.279 2.944 4.359 2.668 20 1.301 2.996 4.472 2.714 21 1.322 3.045 4.583 2.759 22 1.342 3.091 4.690 2.802 23 1.362 3.135 4.796 2.844 24 1.380 3.178 4.899 2.884 25 1.398 3.219 5.000 2.924...
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Homework 11 - 1.587 5 0.699 1.609 2.236 1.710 6 0.778 1.792...

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