Typically, astronomers express the right ascension of a star on the sky in what units?
A. lightyears
B. kilometers
C. hours and minutes and seconds
D. quarters
hours and minutes and seconds
You might also like to view...
This figure shows that the image of a candle inside the focal point of a concave mirror is virtual, erect, and magnified. Where would the candle's image be if it were placed exactly at the center of curvature, point C?
a. A real inverted image is formed at an infinite distance to the left and infinite in size. b. A virtual erect image is formed at an infinite distance to the right and infinite in size. c. The inverted image is formed with the same size as the object, also located at the focal point, but on the opposite size of the optical axis.
Chargaff's first rule states that
a. the amounts of adenine and thymine are identical. b. the DNA molecule is helical. c. the DNA molecule contains deoxyribose. d. the proportion of adenine and guanine differs between different species. e. DNA exhibits a repeating pattern every 0.34 nm.
The weight of a 1.00 kg on the surface of the moon is 
R of the moon is 
m, mass of the moon is 
A. 9.80 N. B. 7.59 N. C. 1.62 N. D. 0.981 N. E. 0.548 N.
From inside out, which is in the correct order for the structure of the Sun?
A) Core, convective zone, radiative zone B) Photosphere, radiative zone, corona C) Radiative zone, convective zone, chromosphere D) Core, chromosphere, photosphere E) Convective zone, radiative zone, granulation