The hot spots in a double-lobed radio source
a. appear to coincide with the location of the central galaxy responsible for the jets.
b. are where hot excited gas interacts with the intergalactic medium.
c. are only found near quasars.
d. produce enough visible energy to be imaged at visible wavelengths.
e. are always perpendicular to each other.
b
You might also like to view...
Name two consequences of the Earth's magnetic field detected from space
What will be an ideal response?
Two charges QA = +2 ?C and QB = - 6?C are located on the x-axis at xA= - 1 cm and xB= +2 cm respectively. Where should a third charge, QC = + 3?C, be placed on the positive x-axis so that the potential at the origin is equal to zero?
A) x = 4 cm B) x = +1 cm C) x =+2 cm D) x = 3 cm E) x = 5 cm
How do medium stars die? Their remnants are
A: nova then white dwarf B: supernova then white dwarf C: planetary nebula then white dwarf D: supernova then neutron star E: supernova then black hole
A flashlight, which uses two 1.5 V batteries in series, is turned on for 2.0 minutes. If the current in the flashlight is 100 mA, what is the energy dissipated?
A. 12 J B. 9.0 J C. 72 J D. 36 J E. 18 J