(a) How many horsepower is a 1900-W blow dryer?
___hp
(b)How many watts is a 3.5-hp lawnmower?
____w
2007-02-01 09:24:41 · 3 answers · asked by Hey ;) 3 in Science & Mathematics ➔ Physics
You might want to try this table for help: http://www.energy.iastate.edu/renewable/wind/wem/wem-18_apen_a.html
1 watt (the international standard measurement for energy) X 746 = 1 horsepower (an archaic standard for measuring energy based on how much energy it takes a horse to lift a standard load.
A 1900 Watt Hair dryer uses 2.5469 horsepower.
A 3.5 horsepower engine uses 2611 watts.
You need to read these Wikipedia articles:
http://en.wikipedia.org/wiki/Horsepower
http://en.wikipedia.org/wiki/SI
http://en.wikipedia.org/wiki/Watt
They will tell you exactly what each unit is and their relationship to each other.
2007-02-01 09:34:24 · answer #1 · answered by Dan S 7 · 0⤊ 0⤋
1 horsepower is 746 watts (about, there are a few different kinds of "horsepower").
So:
2 hp = 1492 W
3 hp = 2238 W
etc.
2007-02-01 09:29:40 · answer #2 · answered by morningfoxnorth 6 · 1⤊ 0⤋
1 hp = ~ 700 w
2007-02-01 09:27:31 · answer #3 · answered by All hat 7 · 0⤊ 0⤋