Text race history for Mr. lee's expository writing class (kayak1)

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Transformers and most electric motors operate on alternating current. In such devices the flux in the iron changes continuously both in value and direction. The magnetic domains are therefore oriented first in one direction, then the other, at a rate that depends upon the frequency.

Game Time WPM Accuracy
99834 2019-12-08 01:07:24 125.81 98%
96669 2019-05-04 19:58:59 128.25 98%
96287 2019-04-27 15:05:46 107.50 99%
94974 2019-04-14 01:51:07 128.57 98%
93224 2019-04-04 15:10:47 124.13 98%
90451 2019-03-14 06:23:21 118.07 98%
87027 2019-02-19 22:18:17 117.37 98%
85608 2019-02-11 00:41:39 147.03 99%
84723 2019-02-06 21:33:03 123.05 98%
82100 2018-12-06 21:04:16 130.32 98%