Radio astronomers detect electromagnetic radiation at 44.0 MHz from an interstellar gas cloud. They suspect this radiation is emitted by electrons spiraling in a magnetic field. What is the magnetic field strength inside the gas cloud?

The magnetic field strength is  

Explanation:

The objective of the solution is to obtain the magnetic field strength inside the gas cloud and in order to do so we would be employing the mathematical expression of magnetic field strength which is represented as

Where B is the magnetic field strength

           f is the frequency

           m is the mass

           q is the  charge

From the question

Generally the mass of an electron which is the is particle

And the charge q is generally

Note that this electromagnetic radiation with frequency 44.0MHz is a moving electron mass

   substituting these values into the equation for the magnetic field strength

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electromagnetic shielding is the practice of reducing the electromagnetic field in a space by blocking the field with barriers made of conductive or magnetic materials. shielding is typically applied to enclosures to isolate electrical devices from their surroundings, and to cables to isolate wires from the environment through which the cable runs. electromagnetic shielding that blocks radio frequency electromagnetic radiation is also known as rf shielding.

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from wikipedia