The division of the geological history of the Earth into sets of distinct intervals is referred to as the geological
A) time scale
B) record
C) spectrum
D) ladder
A
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If you add 1.33 MJ of heat to 500 g of water at 50°C, what is the final temperature of the steam? The latent heat of vaporization of water is 22.6 × 105 J/kg. The specific heat of steam is 2010 J/(kg K)
A) 100°C B) 112°C C) 123°C D) 147°C E) 195°C
The three phases of matter can exist together in equilibrium at the
A) critical point. B) triple point. C) melting point. D) boiling point. E) evaporation point.
What is the difference between spectroscopic and visual binaries?
A. Spectroscopic binaries have double spectral lines but do not move. B. In a visual binary we can see two distinct stars; in spectroscopic binaries, the images of the two stars cannot be resolved. C. Visual binaries are pairs of stars in the same region in the sky but are not gravitationally interacting. D. A visual binary does not show changes in the spectral lines.
Impulse: Identical forces act for the same length of time on two different objects. The magnitude of the change in momentum of the lighter object is
A. smaller than the magnitude of the change in momentum of the larger mass, but not zero. B. larger than the magnitude of the change in momentum of the larger mass. C. exactly equal to the magnitude of the change in momentum of the larger mass. D. zero. E. There is not enough information to answer the question.