[Selected]: All categories ➔ Science & Mathematics
Agriculture · Alternative · Astronomy & Space · Biology · Botany · Chemistry · Earth Sciences & Geology · Engineering · Geography · Mathematics · Medicine · Other - Science · Physics · Weather · Zoology
ok... an 80 kg skier rides a 2700 m long lift to the top of a mountain. the lift makes 14.9 degree angle w/ horizontal what cvhange in skiers gravitational potential enery......
i tried to use w=mg(cos theta) (h0-hf) but i got wrong answer is this the wrong formula... maybe i am pluggin this in all wrong? please explain
2007-02-18 00:28:46 · 3 answers · asked by Anonymous in Physics
I need an official certificate.
2007-02-18 00:28:20 · 2 answers · asked by Julie C (little ninja) 1 in Earth Sciences & Geology
instruments used when travelling outer space
2007-02-18 00:27:55 · 5 answers · asked by xWhite&BlackAngelzx 1 in Astronomy & Space
It's a neutralization reaction...the reactants are..
2Al(OH)3 + 3H2CO3->
I thought it was this 6H2O + Al2C3O9, but I'm wrong so can somebody please help me out!
2007-02-18 00:26:16 · 3 answers · asked by lilbree321 1 in Chemistry
2007-02-18 00:26:01 · 2 answers · asked by d13 666 2 in Mathematics
I have a physics question...Please if you understand explain this to me....I do not want anyone to do this for me I need explanation....b/c I wil need to understand this stuff when i take teh test so please explain adn talk me through this problem....
A skier, starting from rest, coasts down a mountain that makes an angle 25 degrees with the horizontal. The coefficient of kinetic friction between the snow and skis is .200. she coasts for 8.4 m before coming to the edge of a cliff.. Without slowing down, she skis off the cliff and lands downhill at a point whose vertical distance is 3.80 m below the edge. How fast is she going just before she lands?
It says that this correlates the the work energy theorem and kinetic energy ... i read the sections and example problems and still have no idea where to even begin. Please help....thank you
2007-02-18 00:17:37 · 3 answers · asked by imjustmewhatelseshouldibe 1 in Physics
give a formula for finding "a",plz!
2007-02-18 00:09:54 · 5 answers · asked by Anonymous in Mathematics
2007-02-18 00:09:21 · 10 answers · asked by Guy 2 in Biology
2007-02-18 00:04:33 · 1 answers · asked by nad 1 in Physics
2007-02-18 00:01:07 · 47 answers · asked by pa r 1 in Geography
2007-02-18 00:00:32 · 1 answers · asked by aly 1 in Geography
Questions asked on 18 February 2007:
Showing 1111 to 1121 of 1121 questions
Questions asked on other days: