Consider a circuit with two resistors in parallel r_1 = 10 ohm and r_2 = 5 ohm. a) determine the total resistance of the circuit. b) calculate the total current flowing through the battery. c) what are the current and voltage through each resistor? d) repeat the calculations for a series configuration.

Acompound machine is also called a machine. a. force b. simple c. complex d. directional

Select for each of the following statements whether it is correct or incorrect. (a) in an isothermal expansion of an ideal gas. (b) the temperature remains constant. (b) the pressure remains constant. (c) there is work done by the gas. (d) there is heat added to the gas. (e) the change in internal energy equals zero.

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 =