The rotation spectrum of the HCl molecule suggests a photon in the far infrared (around 5.0 × 10^?6 m) can excite the first rotational level. From this data, the moment of inertia of the HCl molecule (in kg ? m2) is
a. 2.8 × 10^?48
b. 2.8 × 10^?49
c. 2.8 × 10^?47
d. 2.8 × 10^?46
e. 2.8 × 10^?45
b
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If you are measuring the mass of an elephant, the most appropriate SI unit is the
A) megagram. B) kilogram. C) gram. D) milligram. E) microgram.
Two ice skaters are at rest and facing each other. One skater weighs 140 lbs and the other skater weighs 180 lbs. The skaters "push off" of each other. The 140 lb skater is moving at 5.00 m/s to the EAST. What is the velocity of the 180 lb skater?
A. 6.50 m/s EAST B. 6.50 m/s WEST C. 3.89 m/s EAST D. 3.89 m/s WEST E. 1.55 m/s EAST
Four of the five answers listed below are aspects of the scientific method. Select the exception
a. observation b. hypothesis c. experimentation d. philosophy e. conclusion
The intensity of radiation reaching the Earth from the Sun is 1350 W/m2 . The Earth's radius is 6.4 × 10^6 m. How big a force does this radiation exert on the Earth? (Assume it is all absorbed.)
a. 5.8 × 10^8 N b. 1.2 × 10^9 N c. 2.3 × 10^9 N d. 4.6 × 10^9 N e. 1.7 × 10^17 N