If a star's apparent visual magnitude is equal to its absolute visual magnitude, how far is the star located from Earth?
a. 0 pc b. 1 pc
c. 10 pc d. 100 pc
Question 2
An isolated black hole in empty intergalactic space would be difficult to detect because
a. there would be no stars behind it whose light would be affected by gravitational lensing.
b. it could not emit light from inside its event horizon.
c. no companion stars would be affected by its gravitational field.
d. no matter would be falling into it to create an X-ray-emitting accretion disk.
e. All of the other choices are correct.
Primary visual processing areas (blue) in (a) human (lateral and mesial views) and (b) chimpanzee.
Because of immature visual-motor coordination, young children find it hard to throw and catch small ...
A visual inspection on this battery showed that the electrolyte level was below the plates in all ...
Primary Visual Cortex
Determined the magnitude of the magnetic force on the conductor.
Smooth Brittle Star.