Which of the following types of galaxies are most spherical in shape?
A) spirals
B) ellipticals
C) lenticulars
D) irregulars
B
You might also like to view...
The principal axis is the
A) straight line drawn from the center of curvature to the mid point of the mirror. B) straight line drawn from the center of curvature to any point of the mirror. C) straight line drawn from the center of curvature to a point on the outer edge of the mirror. D) straight line joining any two points on the mirror. E) None of the other answers given is correct.
A 200-Hz and a 206-Hz sound are emitted into the same volume of space. What is the frequency of intensity variation?
A) 406 Hz B) 41.2 kHz C) 6 Hz D) 1.03 Hz E) 203 Hz
A particle (charge = 5.0 mC) is released from rest at a point x = 10 cm. If a 5.0-mC charge is held fixed at the origin, what is the kinetic energy of the particle after it has moved 90 cm?
a. 1.6 J b. 2.0 J c. 2.4 J d. 1.2 J e. 1.8 J
The wavelength of a wave is
A) the distance between a peak of the wave and the next trough. B) the distance between two adjacent peaks of the wave. C) the distance between where the wave is emitted and where it is absorbed. D) how strong the wave is. E) equal to the speed of the wave times the wave's frequency.