Which of the following statements about globular clusters is true?
A) Most stars in the cluster are yellow or reddish in color.
B) There is an approximately equal number of all types of stars in the cluster.
C) All stars in the cluster are approximately at the same stage in their evolution.
D) All stars in the cluster have approximately the same mass.
E) Most of the stars in the cluster are younger than 10 billion years.
A
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The critical resolved shear stress for high-purity FCC copper is 0.63 MPa. A polycrystalline tensile test specimen is made from this copper material. What is the predicted tensile proportional limit stress for this specimen?
What will be an ideal response?
In the context of a planetary atmosphere, what is a bar?
A) the surface pressure on any planet B) a description of the atmospheric composition on Earth C) a place where lawyers can get sodas and other drinks D) a unit of pressure roughly equal to the atmospheric pressure at sea level on Earth
In beta minus decay, the number of protons in the nucleus
A) is decreased by 1. B) is decreased by 2. C) is increased by 1. D) is increased by 2. E) remains unchanged.
The specific heat of ice is 2.100 kJ/kg 
the heat of fusion for ice at 0
is 333.7 kJ/kg, the specific heat of water 4.186 kJ/kg 
and the heat of vaporization of water at 100.0
is 2,256 kJ/kg. What is the final equilibrium temperature when 10.00 grams of ice at -15 
is mixed with 3.000 grams of steam at 100
?
A. 87.21
B. 85.32
C. 82.56
D. 80.12
E. 78.45