Which is the most distant active galaxy?
a. Seyfert galaxies
b. Radio galaxies
c. Quasars
d. BL Lac objects
C
Physics & Space Science
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The radius of a nucleus is proportional to what power of the mass number?
A) 1/2 B) 1/3 C) 1/4 D) 2/5 E) 3/8
Physics & Space Science
An artillery shell is fired with an initial velocity of 300 m/s at 55.0° above the horizontal. It explodes on a mountainside 42.0 s after firing. If x is horizontal and y vertical, find the (x, y) coordinates where the shell explodes
Physics & Space Science
First Law of Thermodynamics: In an isochoric process, the internal (thermal) energy of a gas decreases by 50 J. How much work is done by the gas during this process?
A. 0 J B. 50 J C. -50 J D. 25 J E. -25 J
Physics & Space Science
What is the average kinetic energy (in keV) of an ion that has a temperature of 108 K?
a. 8.2 b. 13 c. 4.3 d. 16 e. 21
Physics & Space Science