Why do some radio galaxies appear to have lobes while some do not?
What will be an ideal response?
It's believed that all radio galaxies have lobes. If the lobe happens to be pointing at us, it appears minimized and we see mostly the core.
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Projectile Motion: A player kicks a soccer ball in a high arc toward the opponent's goal. At the highest point in its trajectory
A. both the velocity and the acceleration of the soccer ball are zero. B. neither the ball's velocity nor its acceleration are zero. C. the ball's acceleration is zero but its velocity is not zero. D. the ball's acceleration points upward. E. the ball's velocity points downward.
Two very long parallel wires are a distance d apart and carry equal currents in opposite directions. The locations where the net magnetic field due to these currents is equal to zero are
A) midway between the wires. B) a distance d/2 to the left of the left wire and also a distance d/2 to the right of the right wire. C) a distance d to the left of the left wire and also a distance d to the right of the right wire. D) a distance d/ to the left of the left wire and also a distance d/ to the right of the right wire. E) The net field is not zero anywhere.
Use figure E2.12 to specify the direction of the net force that the neutral atom exerts on the dipole. (Hint: Think of any dipole(s) as independent charged particles.
A. A B. B C. C D. D E. Zero F. Other G. AA H. BB I. CC J. DD
The electric field shown is produced by a single point charge at the center of the picture
 What force might a charge placed at location D feel? a. zero b. an upward force c. a downward force d. a force to the right e. a force to the left