Two pulses of exactly the same size and shape are traveling toward each other along a stretched rope; they differ only in that one is upright while the other is inverted. superposition tells you that when the pulses meet each other, they will cancel each other exactly at that instant and the rope will show no evidence of a pulse. what happens afterwards?

There are weak or strong attractive forces between atoms of liquids with a high viscosity

3. a lunar exploration vehicle was created by a research team. it weighs 3,000 kg on the earth. it needs an acceleration of 10 m/s2 on the moon. in order to have the same acceleration, what will be the net force acting on the vehicle on the earth?

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 =