The condensation sequence suggests that ____ should condense as solids closest to the sun
a. hydrogen and helium
b. metals and metal oxides
c. silicates
d. ices of water, methane, and ammonia
B
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Supernova remnants ________.
A. may contain up to 10 solar masses of material ejected from the star B. initially expand at thousands of km/s C. are important for mixing material into the interstellar medium D. All of these choices are correct.
Calculate the entropy change of the lead that occurs when 2.00 kg of lead at 40.0°C are placed in a very large quantity of water at 10.0°C. The specific heat of lead is 0.031 cal/(g?K)
A) -12.6 J/K B) 86.0 J/K C) -26.1 J/K D) -86.0 J/K E) -6.24 J/K
If a reflected ray in air at an angle of reflection of 60 
is totally polarized, what is the index of refraction of the reflecting material?
A. 1.50 B. 2.00 C. 1.73 D. 1.15 E. this angle is not possible for an incident ray in air
The figure shows two forces acting on an object, with magnitudes and What third force will cause the object to be in equilibrium (acceleration equals zero)?
A) 52 N pointing down B) 52 N pointing up C) 82 N pointing down D) 82 N pointing up