One of the fundamental ideas in the development of quantum mechanics was that
A. no two particles can have the same energy.
B. all particles have wave properties.
C. electrons and protons are the only particles
D. all particles are formed by the interaction of electromagnetic waves. with mass.
Answer: B
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Your Local Sky
a. Where is the north (or south) celestial pole in your sky? b. Describe the meridian in your sky. c. Describe the celestial equator in your sky. d. What is the range of declinations that makes a star circumpolar in your sky? Explain. e. Describe the path of the Sun through your sky on the fall equinox. f. Describe the path of the Sun through your sky on the winter solstice.
Geology's best tool for establishing absolute geologic time is
a. index fossils. b. radiometric dating. c. the principle of superposition. d. the principle of cross-cutting relationships.
In a compound microscope
A) both the objective and the eyepiece form real images. B) magnification is provided by the objective lens and not by the eyepiece. The eyepiece merely increases the resolution of the image viewed. C) magnification is provided by the objective and not by the eyepiece. The eyepiece merely increases the brightness of the image viewed. D) the magnification is m1 + M2, where m1 is the lateral magnification of the objective and M2 is the angular magnification of the eyepiece. E) the image of the objective serves as the object for the eyepiece.
A 10 kg solid cylinder with a 50.0 cm radius has a moment of inertia of 1/2 
If a torque of 2.0 N•m is applied to the object, the angular acceleration is
A. 1.0 
B. 1.6
C. 1.8
D. 2.1
E. 2.3