Mario Molina and Sherwood Rowland received the 1995 Nobel Prize for
A) their efforts to control chemical warfare.
B) their efforts to control nuclear weapons.
C) their experiments and theories concerning the chemical basis for atmospheric ozone depletion.
D) their discovery of new ways to make the electronic portion of the electromagnetic spectrum more useable by all the people of the world.
E) their experiments and theories concerning the chemical basis for global warming.
C
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Which of the following features is not a feature of central dominant galaxies?
A) They are often spiral galaxies. B) They often have multiple galactic nuclei near their centers. C) They are thought to form by the merger of several smaller galaxies. D) They're found in clusters of galaxies.
A__________is a supernova explosion caused by the collapse of a massive star
A) type II supernova B) type I supernova C) type Ia supernova D) type III supernova
A parallel-plate capacitor has a capacitance of 10 mF and is charged with a 20-V power supply
The power supply is then removed and a dielectric material of dielectric constant 4.0 is used to fill the space between the plates. What is the voltage now across the capacitor? A) 2.5 V B) 10 V C) 5.0 V D) 80 V E) 20 V
An ice dancer with her arms stretched out starts into a spin with an angular velocity of 1.00 rad/s. Her moment of inertia with her arms stretched out is 2.48 kg 
What is her angular velocity when she pulls in her arms to make her moment of inertia 1.40 kg 
?
A. 2.67 rad/s B. 2.45 rad/s C. 2.03 rad/s D. 1.90 rad/s E. 1.77 rad/s