How are the jets produced by radio galaxies similar to those produced by protostars?

What will be an ideal response?


Jets in radio galaxies and in protostars may be generated by the same physical mechanisms. They both probably are means for the systems to shed angular momentum. They both probably coexist with a disk structure.

Physics & Space Science

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Capacitance: If the electric field between the plates of a given air-filled capacitor is weakened by removing charge from the plates, the capacitance of that capacitor

A. increases. B. decreases. C. does not change. D. It cannot be determined from the information given.

Physics & Space Science

An earthquake generates three kinds of waves: surface waves (L-waves), which are the slowest and weakest, shear (S) waves, which are transverse waves and carry most of the energy, and pressure (P) waves, which are longitudinal waves and are the

fastest. The speed of P waves is approximately 7 km/s, and that of S waves is about 4 km/s. People do not generally feel the P waves, but animals seem to be sensitive to them. If a person reports that her dog started barking 20 seconds "before the earthquake," then approximately how far was the origin of the earthquake? A) 100 km B) 200 km C) 300 km D) 400 km E) 500 km

Physics & Space Science

The larger the ripple voltage, the better the filter.

a. True b. False

Physics & Space Science

What did the Greek philosopher Philolaus believe about the Universe? a. No parallax seen of new stars means Earth is the center of the Universe. b. Perfect heavens must be made of up spheres rotating at constant rates. c. The most perfect geometrical form was the sphere

d. The heavens are perfect and Earth is imperfect. e. Earth moved around a central fire.

Physics & Space Science