Two electrically-charges spheres are suspended from insulated threads a certain distance from each other. there is a certain amount of electrostatic force between them. describe specifically (not just increase or decrease) what happens to this force in each of the scenarios below (1 pt. ea.):

Two friends are having a conversation. anna says a satellite in orbit is in freefall because the satellite keeps falling toward earth. tom says a satellite in orbit is not in freefall because the acceleration due to gravity is not 9.80 m/2 . who do you agree with and why?

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 =

Match each type of lever with the correct diagram. 1. first-class 2. third-class 3. second-class