If a proton has a kinetic energy of 1.000 GeV, what is its speed? 
A. 0.935 c
B. 0.875 c
C. 0.766 c
D. 0.586 c
E. 0.343 c
B. 0.875 c
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The ____ of a telescope is a measure of its ability to show fine detail and depends on the diameter of the objective
a. light-gathering power b. focal length c. magnifying power d. resolving power e. spherical aberration
Which of the following can you observe about Venus with the naked eye?
a. Venus sometimes shines brightly in the eastern sky shortly before dawn b. Venus is visible at midnight when it is in its full phase c. When Venus is brightest, it is visible all night long d. Venus sometimes shines brightly in the western sky shortly after sunset
Which pulls on the oceans of Earth with a greater force?
A) Moon B) Sun C) both pull the same.
The _______________ of the moon is the period of time for the moon to complete a cycle of the lunar phases and is approximately 29.5 days long
a. sidereal period b. saros cycle c. synodic period d. eclipse season e. umbral period