The type of radiation coming from active nuclei due to electrons spiraling in very strong magnetic fields at relativistic speeds is:

A) positron radiation.
B) thermal energy.
C) a blackbody curve.
D) synchrotron radiation.
E) nuclear energy.


D

Physics & Space Science

You might also like to view...

The proper motion of a star is its true velocity through space

Indicate whether the statement is true or false

Physics & Space Science

A 50-kg satellite circles the Earth in an orbit with a period of 120 min. What minimum energy is required to change the orbit to another circular orbit with a period of 180 min? (Earth: radius = 6.4 × 106 m, mass = 6.0 × 1024 kg)

A. 2.9 × 108 J B. 3.5 × 108 J C. 4.1 × 108 J D. 4.7 × 108 J E. 5.9 × 108 J

Physics & Space Science

Why are Cepheid variables important to understanding the formation of the Universe?

A) Because they rotate at known speeds. B) Because their brightness is a function of distance from Earth. C) Because their luminosity is a function of their pulsation period. D) Because they are at known distances from Earth.

Physics & Space Science

The elements that we are all made of are common everywhere in the observable Universe

a. True b. False Indicate whether the statement is true or false

Physics & Space Science