Which occurrence is associated with the demise of the dinosaurs?
a. The Great Dying
b. The Cambrian explosion
c. The breakup of Pangaea
d. The K-T event
d
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A rigid cylinder (15 cm radius, 15 cm height) contains nitrogen gas 
at standard temperature and pressure. What is the total translational kinetic energy of the gas molecules in the cylinder?
A. 1.6 kJ B. 0.51 kJ C. 0.86 kJ D. 2.7 kJ
Which of the following has the highest frequency?
a) Visible light b) Microwaves c) Infrared d) Radiowaves
Jupiter has a large ________ created by the interaction between the planet's magnetic field and the solar wind
Fill in the blank(s) with correct word
A far-sighted student has a near point of 1.0 m. Calculate the focal length (in cm) of the glasses needed so the near point will be normal (25 cm).
A. 72 B. 25 C. 33 D. 100 E. ?33