In the circuit shown on the right, the rate at which R1 dissipating electrical energy is 20.0W.
(a) Find R1 and R2.
(b) What is the emf of the battery?
(c) Find the current through both R2 and the 10.0-Ω
resistor.
(d) Calculate the total electrical power consumption in all
the resistors and the electrical power delivered by the battery

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 =

As the distance from a magnet increases, what happens to the magnet force?

What instrument is used to measure liquid volume?