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.
Demonstration of equal segregation within one meiocyte in the yeast S. cerevisiae
Testing Visual Fields by Confrontation: The nurse and patient should be approximately at an eye to e
The Structure of an Old Low-Mass Star
Regions of the Human Visual Cortex and Their Functions
Kepler’s Law of Equal Areas
Find the magnitude and the direction of the resultant vector of the vectors below.