Find the change in entropy (in J/K) when 5.00 moles of an ideal monatomic gas are allowed to expand isobarically from an initial volume of 20 cm3 to a final volume of 100 cm3
a. 167
b. 100
c. 67
d. 52
e. 152
C
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Propped cantilever beam AB has moment M1 applied at joint B. Framework ABC has moment M2 applied at C. Both structures have constant flexural rigidity EI. If the ratio of the applied moments M1/M2 5 3/2, the ratio of the joint rotations at B, ?B1/?B2, is approximately:
(A) 1
(B) 3/2
(C) 2
(D) 5/2
Process of Science: Why is it not science to start with the answer to a question and look for evidence to support it?
What will be an ideal response?
The angle of incidence of a light wave is
a. different depending on whether there is diffuse or specular reflection. b. measured from a normal to the surface. c. equal to the angle of refraction. d. measured relative to the surface of the material.
Does the Sun ever set north of due west for an observer located at Washington, D.C. (39°N)? What time of year would this occur?