An antenna of 10.1 kW radio station radiates electromagnetic waves in all directions. At distance 5.2 km from this antenna, an open window of area 0.52 m2 is positioned perpendicular to the propagation direction of this electromagnetic wave. How much energy does this wave carry through the window during 29 seconds? (Give your answer in scientific notation, using "J" (Joule) as a unit)

In 1980, alfa romeo introduced the first system to smooth a rough idle caused by ignition and camshaft timing changes.

Steam enters an adiabatic diffuser at 150 kpa and 1208c with a velocity of 550 m/s. determine the minimum velocity that the steam can have at the outlet when the outlet pressure is 300 kpa.

Unpolarized light of intensity i_0=750w/m^2 is incident upon two polarizers. after passing through both polarizers the intensity is i_2=280w/m^2. (a) what is the intensity of the light after it passes through the first polarizer in w/m^2? (b) write an equation for the angle between the polarizers in terms of the initial (i_0) and final (i_2) intensities. (c) find the angle between the polarizers in degrees.