A car heading north collides at an intersection with a truck heading east. If they lock together and travel at at 15° north of east just after the collision, how fast was the car initially traveling? Assume that the two vehicles have the same mass. -Thanks!

Where do magnetic lines of force enter earth?

What is a costume plot? why is it important to a film or theater production?

Consider the growth of a 20-nm-diameter silicon nanowire onto a silicon wafer. the temperature of the wafer surface is maintained at 2400 k. assume the thermal conductivity of the silicon nanowire is 20 wm-1k-1 and all its surfaces including the tip are subjected to convection heat transfer with the coefficient h = 1×105 wm-2k-1 and t∞ = 8000 k. when the nanowire grows to l = 300 nm, what is the temperature of the nanowire tip (t (x =