# Yahoo Web Search

1. ### a lost hiker radios you and tells you...?

...c^2 = 146.9 c = 12.1 km 3. Use sine Law to find angle 12.1/sin 143 = 4.2/ sin X sin X = 0.2 X = 12 ...

2 Answers · Science & Mathematics · 03/02/2010

2. ### how do I find the mass?

Normal body temperature is 37ºC 3.900,000 J? that is 3.9 J ? E = SH x mass x ΔT 3.9 J = 3470 J/kg°C x M x (37–16) M = 0.0000535 kg which doesn't make sense. Perhaps you mean 3900000...

1 Answers · Science & Mathematics · 08/11/2013

3. ### A hiker makes 20 km in 5 hours and then gets a ride by a car for another 10 km at a speed of 80 km/h. Find the average speed for the trip.?

AVERAGE SPEED = TOTAL DISTANCE / TOTAL TIME Distance = 20+10 = 30 km Time = 5 + 10/80 = 5 1/8 hours AVERAGE SPEED = 30 / 41/8 = 240 /41 = 5.85 km/ hour ANSWER

1 Answers · Science & Mathematics · 19/05/2014

4. ### Help with Vectors...?

By adding and subtracting the numbers, the hiker 's position is 6 km W and 5 km N of the camp. The...

1 Answers · Science & Mathematics · 19/09/2008

5. ### i need help with physics! please read more! Thanks~?

...function... Tan^-1 (240/450) = 28 degrees west of south The lost hiker : add the east and west directions, consider west as negative: 4 + 3 + (-15...

1 Answers · Science & Mathematics · 30/07/2009

6. ### physics help?

... and 4- North Use pythagorean theorem a^2+b^2=c^2 to find the distance to travel. a=3 b=4 c=5 Use any trig function ex. sinΘ=opp/adj.... anyways the hiker needs to travesl 5 km at 30 degrees SE

2 Answers · Science & Mathematics · 28/01/2008

7. ### Physics Help? Velocity?

...1862 x 650 = 1210300 v = 1100 cm per sec. m = 2000 grams P.E. lost = 1/2 x 2000 x 1210300 = 1,210,300,000 ergs, which is 121 ...

1 Answers · Science & Mathematics · 19/12/2012

8. ### i need someone to help explain some physics problems?

1) To add two vectors, use the law of cosines: C = sqrt (A^2 + B^2 + 2AB cos theta) 2) Add up the x (east is positive) and y (north is positive) components. Use pythagorus to get the magnitude (you already...

2 Answers · Science & Mathematics · 05/06/2010

9. ### I need some help with a few physics questions please. ch4?

1. Unless you want to make life suck for yourself, your coordinate axes should always be perpendicular. 2) To get the magnitude, use pythagorus: d = sqrt (x^2 + y^2) To get the direction, use theta = arctangent (y/x) 3) Add up all the north/south pieces...

1 Answers · Science & Mathematics · 19/06/2008

10. ### Some college physics problem?

you shouldn't be in college if you're stupid enough to think anyone is going to do that for you

1 Answers · Science & Mathematics · 14/04/2010