An object m1 is suspended by two extensible strings, which pass over smooth pulleys, and is attached to objects m2 and mp3. at m1, the strings are at right angles to each other, and make equal angles with the horizontal. if the mass of m2 is 1.0kg, what are masses of particle m1 and m3?

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 =