Msjazz

none

General Chat

Physics 12 question City Y is due south of city X. In order to get from city X to city Y on time, an airplane must travel with a groundspeed of 285 km/h. If there is a wind blowing from East to West at 75.0 km/h, what should the plane's airspeed be? A. 210 km/h B. 275 km/h C. 295 km/h D. 360 km/h so basically i made a triangle , X being top , Y being south , and maing a right triangle pointing east direction. (http://imgur.com/0VEPN2T). I got an answer of B. However, my friend keeps telling me the answer is C. This is a practice exam and the teacher won't help us. Is the answer B or C? Thanks

General Chat

Physics 12 help I have so far done question a and b but Im stuck on rest. I rarely ask questions for help and I try to figure by myself but Ive tried googling and everything But I dont get anything. so far for a and b this is what I've done. a) R= 56.0centimeter x 0.038ohm over centimeter = 2.13 ohm b) R=48.0cm x 0.038 ohm / centimeter = 1.82 ohm for c, I kind of have an idea (I = V/R. Where V = 1.35V and R = (.038*48) ) equations for references are here: Q = I(ohm)t V = IR P = VI emf = V + Ir = Ve + Vi = L(Vo/Lo) any help is greatly appreciated!

Show me more!