Ahertzian dipole antenna in free space has /= 0.02. the following are in far-field: (a) what value of current i is necessary to radiate a total power of 60 mw? (b) what is the ratio of the magnetic field intensity, h, at the polar angles 0 = 10 degrees and 80 degrees (c) what fraction of the total radiated power is contained in the region 0 < 60 degrees (d) what is the radiation resistance, rrad?

A0.750 kg aluminum pan is removed from the stove and plunged into a sink filled with 10.0 kg of water at 293 k. the water temperature quickly rises to 297 k. what was the initial temperature of the aluminum pan? the specific heat of aluminum is ca = 900 j/(kgk) and water is cw = 4190 j/(kgk)

Avehicle accelerates from 0 to 30 m/s in 10 seconds on a straight road

Consider a production line with five stations. station 1 can produce a unit in 9 minutes. station 2 can produce a unit in 10 minutes. station 3 has two identical machines, each of which can process a unit in 12 minutes (each unit only needs to be processed on one of the two machines. station 4 can produce a unit in 5 minutes. station 5 can produce a unit in 8 minutes. which station is the bottleneck station?