We expect neutron stars to spin rapidly because they conserve angular momentum
a. True
b. False
Indicate whether the statement is true or false
True
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The removal of an electron from an atom is called
a. binding affinity. b. atomizing. c. electron affinity. d. ionization.
The surface temperature of the star is 6000 K. At what wavelength is its light output a maximum? The constant in Wien's law is 0.00290 m ? K
A) 850 nm B) 907 nm C) 311 nm D) 483 nm E) 502 nm
The absence of oxygen on Mars means that it has very little
a. carbon dioxide. b. methane. c. ozone. d. helium.
Carl has a 5-inch refracting telescope, and Jim has a 3-inch reflecting telescope. Whose telescope has a higher light-gathering power?
A. Carl's, because lenses gather more light. B. Carl's, because the larger the diameter, the more light to be collected. C. Jim's, because the smaller the diameter, the more light to be collected. D. Jim's, because mirrors gather more light.