A uniform plane wave is generated from a ham radio antenna on earth. The take off angle is 60 degrees (the angle ffrom ground going up is 60 deg). Using simple trigonometry the angle if incidence with the ionosphere would be 30 degrees. Assume the F layer of the ionosphere is 300 km above the earth. The wave frequency from the transmitter is 21 MHz. WIll this wave refract off the ionosphere and end up somewhere on earth? If yes, what is the distance it travels?

Q: In an experiment to demonstrate interference, you connect two antennas to a single radio receiver.…

A: The expression for the wavelength lambda is,

Q: A spherical object of radius 10.5 cm is heated to a certain temperature. After examing its emission…

A:

Q: A system of three polarizing sheets intercepts a beam of initially unpolarized light. The polarizing…

A: Given that:There are system of three polarizing sheets.Polarising direction of 1st sheet is parallel…

Q: Problem 5: The wavelength range of visible light is usually taken to be from 400 to 700 nm,…

A: The wavelength range of visible light is usually taken to be from 400 to 700 nmThis range is usually…

Q: As the diameter of a laser beam increases O a. The divergence of the beam will remain the same O b.…

A:

Q: From your spacecraft at Mars, a basalt lava flow is 315 km below. a) What is the range delay time of…

A: We have, delay time ∆t=2hεc Where, h=Depthc=velocity of lightε=relative permittivity a) For…

Q: A radar emits radio waves in vacuum having wavelength 71.7 mm. What is the angular frequency of…

A:

Q: 1. A radar has a pulse length of T = 10 us, an azimuth beamwidth 03 = 3°, and an elevation beamwidth…

A:

Q: A naval radar system operates at a wavelength of 1.3 cm, transmitted from a circular antenna of…

A:

Q: Two identical sources A and B emit in-phase plane radio waves with frequency 3.17E4 Hz and intensity…

A:

Q: Suppose that a laser has a power output of 0.41 mW. If the laser projects a circular spot on a wall…

A:

Q: Approximately what is the smallest detail observable with a microscope that uses ultraviolet light…

A: The smallest detail observable with a microscope is equivalent to the wavelength of light used.

Q: 5. A radio station is radiating EM waves with an average power of Pave = 1500 kW from its vertical…

A: Given Data : average power of Pave = 1500 kW vertical antenna length, L = 10 m.  Radiation is…

Q: Calculate the wavelength A2 for visible light of frequency f2 = 6.45×x1014 Hz . Express your answer…

A: λ2=cf2

Q: Suppose that we have a filter with a pass band of 1.0 Å centered at 600nm, and we illuminate it with…

A:

Q: Two antennai (which may or may not be in phase with each other) transmit a radio wave at an AM…

A: For the center line, path difference is zero. This gives rise to destructive interference. This…

Q: If the aircraft is flying at FL280 and the horizontal distance from the aircraft to the radar is…

A: We are given distance between radar and aircraft. The radar send radio waves which travel at speed…