Radio telescopes have poor resolving power because:
A) they have the smallest diameters.
B) they cannot measure wavelengths larger than 102 m.
C) radio waves have long wavelengths.
D) radio waves have small diffraction fringes.
C
You might also like to view...
In the symbol for the Hubble type of a galaxy, SBc, the "B" denotes
A. the presence of a bar B. a large bulge component C. loosely wound spiral arms D. the presence of a ring E. tightly wound spiral arms
Total internal reflection occurs when the angle of incidence of the light is greater than the ______________ angle
Fill in the blank(s) with correct word
A main-sequence star more massive than the Sun:
A) will have less density than the Sun. B) will have more luminosity than the Sun. C) always undergoes proton-proton chain reactions to generate energy. D) always undergoes carbon-nitrogen-oxygen cycle to generate energy.
A rod with a diameter of 2.00 mm, projects 20.0 mm horizontally outward from a wall. A 10.0 N weight is hung from the end of the rod and the rod deflects downward by 
The shear strain of the rod is
A. 
B. 
C. 
D. 
E. 