The hottest main-sequence stars are also the most massive
Indicate whether the statement is true or false
TRUE
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Bangladesh's economic development was minimal until the
A. 1890s B. 1920s C. 1950s D. 1970s
The heat of vaporization of water is 540 cal/g. What mass of water at 100°C can be vaporized by the addition of 45.0 kcal of heat?
A) 0.0120 g B) 0.0833 g C) 12.0 g D) 83.3 g
A high water vapor pressure indicates a(n)
a. relatively large number of water vapor molecules in the air. b. relatively small number of water vapor molecules in the air. c. relatively high rate of evaporation. d. abundant supply of condensation nuclei in the air. e. relatively high rate of precipitation.
Evangelista Torricelli, a pupil of Galileo, determined that
A) large-scale circulations of winds. B) air pressure varied with weather conditions. C) winds flow from airs of high to low pressure. D) atmospheric pressure is uniform in the troposphere.