The legend that benjamin franklin flew a kite as a storm approached is only a legend — he was neither stupid nor suicidal. suppose a kite string of radius 2.10 mm extends directly upward by 0.823 km and is coated with a 0.517 mm layer of water having resistivity 168 ω·m. if the potential difference between the two ends of the string is 165 mv, what is the current through the water layer? the danger is not this current but the chance that the string draws a lightning strike, which can have a current as large as 500 000 a (way beyond just being lethal).

Steam is generated in a boiler of a cogeneration plant at 10 mpa and 450°c at a steady rate of 5 kg/s. in normal operation, steam expands in a turbine to a pressure of 0.5 mpa and is then routed to the process heater, where it supplies the process heat. steam leaves the process heater as a saturated liquid and is pumped to the boiler pressure. in this mode, no steam passes through a condenser, which operates at 20 kpa. (a) determine the power produced in the turbine and the rate at which process heat is supplied in this mode. (b) determine the power produced in the turbine and the rate of process heat supplied if only 60 percent of the steam is routed to the process heater and the remainder is expanded to the condenser pressure. (3.32 mw; 9.69 mw; 4.25 mw; 5.82 mw)

What are similarities and differences of reflection, refraction, diffraction and absorption?

The material that keeps its new shape after it is stretched is called?