Short-term and long-term effects of radiation on the health of the recipient are called ______________ effects
a. threshold
b. somatic
c. latent
d. genetic
b
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What is the average translational kinetic energy per molecule of an ideal gas at a temperature of 300 K? The Boltzmann constant is 1.38 × 10-23 J/K
A) 1.7 × 10-21 J B) 8.3 × 10-21 J C) 6.2 × 10-21 J D) 2.1 × 10-21 J E) 4.1 × 10-21 J
What telescope instrument is used to counter the eastward rotation of Earth?
a. Newtonian focus b. sidereal drive c. active optics d. Cassegrain focus e. floppy mirrors
The Hipparcos data give us
A) parallaxes to the nearest galaxies. B) parallaxes as small as 0.005". C) an accurate distance to the Moon. D) distances to about 100 billion stars, practically everything in the Milky Way Galaxy. E) information on only the 6,000 brightest stars.
Which one of the following is not one of the four major features of the solar system?
A. Large bodies in the solar system have orderly motions. B. Planets fall into two major categories (terrestrial and jovian). C. Several exceptions to the general trends stand out. D. Swarms of asteroids and comets populate the solar system. E. The solar system contains eight planets plus dwarf planets (such as Ceres, Pluto, and Eris).