The surface temperature of the star is 6000 K. At what wavelength is its light output a maximum? The constant in Wien's law is 0.00290 m ? K
A) 850 nm
B) 907 nm
C) 311 nm
D) 483 nm
E) 502 nm
D
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Nuclear Reactions: Determine the missing product X in the following nuclear reaction:
U + neutron ? 
Ba + X + 3 neutrons
Fill in the blank(s) with the appropriate word(s).
During the volcanic eruption of Mt. Pelee in 1902, an incredibly hot "burning cloud" rolled down the mountain and incinerated the town of Saint-Pierre. From the damage done, the temperature in the cloud was estimated at 700°C. If the air temperature was 20°C and a mole of air is 29 grams, estimate the molecular weight of the gas in the "burning cloud" that made it heavier than the surrounding air. (As a follow-on, estimate the most probable composition of the cloud. Some typical volcanic gases are H2S, SO2, H2SO4, CO2, NO.)
What will be an ideal response?
How many possible sets of electron states (or quantum numbers) are there in the 5f subshell?
A) 2 B) 8 C) 10 D) 14
The acceleration of a body is
a. always in the same direction as its velocity b. always in the same direction as the net force on the body c. in the direction that the body is moving d. equal to the net force on the body e. none of the above