Wien's Law: What is the surface temperature of a star, if its radiation peak occurs at a frequency of 1.06 × 1015 Hz? (c = 3.00 × 108 m/s, and the constant in Wien's law is 0.00290 m ? K)
A. 17,000 K
B. 14,500 K
C. 19,000 K
D. 20,400 K
E. 10,200 K
Answer: E
You might also like to view...
The average separation between galaxies is about _____ times their diameter
A) 6 B) 20 C) 105 D) 1017
What happened to Venus's water?
A. A runaway greenhouse effect caused the water to be frozen in permanent ice caps. B. Venus still has all of its water, it has just become vapor in the atmosphere. C. Venus never had any water. D. Greenhouse warming caused its oceans to evaporate, and then its hydrogen was lost to space.
The primary winding of an electric train transformer has 400 turns and the secondary has 50 . If the input voltage is 120V(rms) what is the output voltage?
a. 15 V (rms) b. 30 V (rms) c. 60 V (rms) d. 2.4 V (rms) e. 960 V (rms)
Hydrostatic equilibrium is the balance between ________ of a star and ________.
A. the size; energy production B. the internal pressure; gravity C. hydrogen fusion; temperature D. the internal pressure; energy production