The radiation curve for a blue hot star peaks in the
A) infrared region.
B) red region.
C) yellow region.
D) ultraviolet region.
E) none of the above
Answer: D
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A(n) _____________reaction is when one liquid transforms to another liquid and a solid upon cooling.
Fill in the blank(s) with the appropriate word(s).
In electron diffraction, an electron moving at speed v << c acts like
a. a particle with momentum mv. b. a particle with position coordinate v/t. c. a wave with wavelength v/t. d. a wave with wavelength h/mv. e. both a particle with position coordinate v/t and a wave with wavelength v/t.
Transits of multiple planet systems can be analyzed to infer planetary masses
Indicate whether the statement is true or false
An oxygen molecule has a moment of inertia of 5 × 10^?46 kg ? m2 . Calculate the bond length (in nm). Recall that the atomic mass of oxygen is 16 u (1 u = 1.66 × 10^?27 kg)
a. 0.3 b. 0.1 c. 0.2 d. 0.4 e. 0.5