An 800-khz radio signal is detected at a point 8.5 km distant from a transmitter tower. the electric field amplitude of the signal at that point is 0.90 v/m. assume that the signal power is radiated uniformly in all directions and that radio waves incident upon the ground are completely absorbed. what is the average electromagnetic energy density at that point?
Answers: 3
Physics, 22.06.2019 11:20
Suppose a diode consists of a cylindrical cathode with a radius of 6.200Γ10^β2 cm , mounted coaxially within a cylindrical anode with a radius of 0.5580 cm . the potential difference between the anode and cathode is 260 v . an electron leaves the surface of the cathode with zero initial speed (v initial=0). find its speed vfinal when it strikes the anode.
Answers: 1
Physics, 22.06.2019 11:50
Find the dimensions and area of the largest rectangle that can be inscribed in the upper half of the ellipse. (give your answers in terms of a and b. enter the dimensions as a comma-separated list.)
Answers: 2
Physics, 22.06.2019 18:30
An electron in an x-ray machine is accelerated through a potential difference of 1.00 Γ 104 v before it hits the target. what is the kinetic energy of the electron in electron volts?
Answers: 2
Physics, 22.06.2019 19:30
A1.5m wire carries a 2 a current when a potential difference of 52 v is applied. what is the resistance of the wire?
Answers: 1
An 800-khz radio signal is detected at a point 8.5 km distant from a transmitter tower. the electric...
Mathematics, 12.11.2020 17:40
English, 12.11.2020 17:40
Health, 12.11.2020 17:40
Mathematics, 12.11.2020 17:40
History, 12.11.2020 17:40
Biology, 12.11.2020 17:40
Mathematics, 12.11.2020 17:40
Mathematics, 12.11.2020 17:40