Radio astronomers detect electromagnetic radiation at 45 MHz form an interstellar gas cloud. They suspect this...
Radio astronomers detect electromagnetic radiation at 42.0 MHz
from an interstellar gas cloud. They suspect this radiation is
emitted by electrons spiraling in a magnetic field.
Part A
What is the magnetic field strength inside the gas cloud?
Express your answer with the appropriate units.
Radio astronomers detect electromagnetic radiation at 44.0 MHz from an interstellar gas cloud. They suspect this radiation is emitted by electrons spiraling in amagnetic field.What is the magnetic field strength inside the gas cloud?
A radio antenna broadcasts a 1.0 MHz radio wave with 25 kW power. Assume the radiation is emitted uniformly in all directions. 1) what is the wave's intensity 30 km from the antenna 2) what is the electric field amplitude at this distance?
AM radio signals broadcast electromagnetic radiation at frequencies between 530 kHz and 1.10 MHz. (a) What is the shortest wavelength of an AM radio signal?
(1) Cyclotron radiation Free electrons and protons will gyrate, or circle, around magnetic field lines at a frequency fgy equal to JEyrO2T m where B is the magnetic field. q is the charge of the particle, and m is the mass of the particle. Jgyro is call the gyro frequency, and is also called the cyclotron frequency. As we discussed in class, charges which change their velocity will create electromagnetic waves If they change their velocity in a repeating pattern...
A radio station transmits isotropically (i.e. in all directions) electromagnetic radiation at the frequency of 98.2 MHz. At a certain distance from the radial station the wave intensity is I = 0.295 W / m ^ 2. a) What will be the intensity of the wave three times the distance of the radial station? b) What is the wavelength of the transmitted signal. c) If the antenna power is 6 MW. At what distance from the source will the wave...
Light, radiant heat (infrared radiation), X rays, and radio waves are all examples of traveling electromagnetic waves. Electromagnetic waves comprise combinations of electric and magnetic fields that are mutually compatible in the sense that the changes in one generate the other. The simplest form of a traveling electromagnetic wave is a plane wave. For a wave traveling in the x direction whose electric field is in the y direction, the electric and magnetic fields are given by Ē = E,...
17. The principle that shows that electromagnetic waves can be produced by Oscillating charges or currents was first hypothesized by which radiation pioneer? A. Bohr B. Maxwell C. Einstein D. Plank 18. The number of in an atom determines its chemical elemental properties (what chemical element it is). A protons B. electrons C. neutrons D. bosons 19 has the same number of nucleons (same mass number) but a different number of protons and neutrons 20. The describes the situation when...
REVIEW QUESTIONS I. As the frequency of electromagnetic radiation decreases, 6. A photon has a wavelength of 3 × 10-12 m. what is its wavelength will: a. increase. b. decrease. c. remain the same. d. frequency and wavelength are unrelated frequency? a. 3 x 104 Hz b. 3 X 100 Hz c. 1 x 10- Hz d. 1 X 1030 Hz g members of the electromagnetic7. Which of the following do not originate from an unstable spectrum has the ability...