An angle of 1 arcsecond is
A) about the width of your fist held at arm's length.
B) about the width of a finger held at arm's length.
C) less than the thickness of a human hair held at arm's length.
D) slightly more than the width of a basketball held at arm's length.
C) less than the thickness of a human hair held at arm's length.
You might also like to view...
Which element has the lowest mass per nuclear particle and therefore cannot release energy by either fusion or fission?
A) hydrogen B) iron C) oxygen D) silicon
The Large Hadron Collider is expected to produce protons with kinetic energy 7 TeV. What is the speed of these protons?
A) less than 0.9000 c B) 0.9500 c C) 0.9990 c D) greater than 0.9999 c E) 0.9000 c
The redshift of galaxies in the Universe is correctly interpreted as:
A: A Doppler shift due to the motions of galaxies through space. B: An "aging" of the light. C: Space itself expanding with time; the photon wavelengths are stretched as they they travel through space. D: The difference in temperature of distant and nearby galaxies. E: Extinction due to the effects of dust in galaxies.
A compelling advantage of the inflation theory is its explanation of both the ________ and ________ problems
Fill in the blank(s) with correct word