Homework Help: Physics Problem; CONVERSIONS

Posted by Anonymous on Thursday, January 19, 2012 at 11:44pm.

PLEASE HELP ME SOLVE !!!!
InMay 1998, forest fires in southernMexico
and Guatemala spread smoke all the way to
Austin. Those fires consumed forest land at a
rate of 26900 acres/week.
On the average, how many square meters
of forest are burned down every minute? An
acre is an area equivalent to that of a rectangle
60.5 yd wide and 80 yd long, there are 36
inches in one yard, and there are 2.54 cm in
one inch.
Answer in units of m2/min

Physics Problem; CONVERSIONS - Steve, Friday, January 20, 2012 at 5:30am
26900 ac/wk * wk/7day * day/1440min gives ac/min

ac/min * 48560ft^2 * (12in/ft)^2 * (2.54cm/in)^2 * (1m/100cm)^2 gives m^2/min

Just carry the units along. Remember that multiplying by 1 does not change anything. Use the units you want to get or cancel.
Physics Problem; CONVERSIONS - PS - Steve, Friday, January 20, 2012 at 10:43am
Oops -- an acre is 43560 ft^2

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